217121940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:371

約数の個数: 216

約数和(自身を含む): 776805120

約数和(自身を除く): 559683180

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 103, 105, 126, 140, 147, 180, 196, 206, 210, 239, 245, 252, 294, 309, 315, 412, 420, 441, 478, 490, 515, 588, 618, 630, 717, 721, 735, 882, 927, 956, 980, 1030, 1195, 1236, 1260, 1434, 1442, 1470, 1545, 1673, 1764, 1854, 2060, 2151, 2163, 2205, 2390, 2868, 2884, 2940, 3090, 3346, 3585, 3605, 3708, 4302, 4326, 4410, 4635, 4780, 5019, 5047, 6180, 6489, 6692, 7170, 7210, 8365, 8604, 8652, 8820, 9270, 10038, 10094, 10755, 10815, 11711, 12978, 14340, 14420, 15057, 15141, 16730, 18540, 20076, 20188, 21510, 21630, 23422, 24617, 25095, 25235, 25956, 30114, 30282, 32445, 33460, 35133, 43020, 43260, 45423, 46844, 49234, 50190, 50470, 58555, 60228, 60564, 64890, 70266, 73851, 75285, 75705, 90846, 98468, 100380, 100940, 105399, 117110, 123085, 129780, 140532, 147702, 150570, 151410, 172319, 175665, 181692, 210798, 221553, 227115, 234220, 246170, 295404, 301140, 302820, 344638, 351330, 369255, 421596, 443106, 454230, 492340, 516957, 526995, 689276, 702660, 738510, 861595, 886212, 908460, 1033914, 1053990, 1107765, 1206233, 1477020, 1550871, 1723190, 2067828, 2107980, 2215530, 2412466, 2584785, 3101742, 3446380, 3618699, 4431060, 4824932, 5169570, 6031165, 6203484, 7237398, 7754355, 10339140, 10856097, 12062330, 14474796, 15508710, 18093495, 21712194, 24124660, 31017420, 36186990, 43424388, 54280485, 72373980, 108560970, 217121940]

約数ペア:

[(1, 217121940), (2, 108560970), (3, 72373980), (4, 54280485), (5, 43424388), (6, 36186990), (7, 31017420), (9, 24124660), (10, 21712194), (12, 18093495), (14, 15508710), (15, 14474796), (18, 12062330), (20, 10856097), (21, 10339140), (28, 7754355), (30, 7237398), (35, 6203484), (36, 6031165), (42, 5169570), (45, 4824932), (49, 4431060), (60, 3618699), (63, 3446380), (70, 3101742), (84, 2584785), (90, 2412466), (98, 2215530), (103, 2107980), (105, 2067828), (126, 1723190), (140, 1550871), (147, 1477020), (180, 1206233), (196, 1107765), (206, 1053990), (210, 1033914), (239, 908460), (245, 886212), (252, 861595), (294, 738510), (309, 702660), (315, 689276), (412, 526995), (420, 516957), (441, 492340), (478, 454230), (490, 443106), (515, 421596), (588, 369255), (618, 351330), (630, 344638), (717, 302820), (721, 301140), (735, 295404), (882, 246170), (927, 234220), (956, 227115), (980, 221553), (1030, 210798), (1195, 181692), (1236, 175665), (1260, 172319), (1434, 151410), (1442, 150570), (1470, 147702), (1545, 140532), (1673, 129780), (1764, 123085), (1854, 117110), (2060, 105399), (2151, 100940), (2163, 100380), (2205, 98468), (2390, 90846), (2868, 75705), (2884, 75285), (2940, 73851), (3090, 70266), (3346, 64890), (3585, 60564), (3605, 60228), (3708, 58555), (4302, 50470), (4326, 50190), (4410, 49234), (4635, 46844), (4780, 45423), (5019, 43260), (5047, 43020), (6180, 35133), (6489, 33460), (6692, 32445), (7170, 30282), (7210, 30114), (8365, 25956), (8604, 25235), (8652, 25095), (8820, 24617), (9270, 23422), (10038, 21630), (10094, 21510), (10755, 20188), (10815, 20076), (11711, 18540), (12978, 16730), (14340, 15141), (14420, 15057)]