31017420

素因数分解:

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

素因数の和:364

約数の個数: 144

約数和(自身を含む): 109025280

約数和(自身を除く): 78007860

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 103, 105, 126, 140, 180, 206, 210, 239, 252, 309, 315, 412, 420, 478, 515, 618, 630, 717, 721, 927, 956, 1030, 1195, 1236, 1260, 1434, 1442, 1545, 1673, 1854, 2060, 2151, 2163, 2390, 2868, 2884, 3090, 3346, 3585, 3605, 3708, 4302, 4326, 4635, 4780, 5019, 6180, 6489, 6692, 7170, 7210, 8365, 8604, 8652, 9270, 10038, 10755, 10815, 12978, 14340, 14420, 15057, 16730, 18540, 20076, 21510, 21630, 24617, 25095, 25956, 30114, 32445, 33460, 43020, 43260, 49234, 50190, 60228, 64890, 73851, 75285, 98468, 100380, 123085, 129780, 147702, 150570, 172319, 221553, 246170, 295404, 301140, 344638, 369255, 443106, 492340, 516957, 689276, 738510, 861595, 886212, 1033914, 1107765, 1477020, 1550871, 1723190, 2067828, 2215530, 2584785, 3101742, 3446380, 4431060, 5169570, 6203484, 7754355, 10339140, 15508710, 31017420]

約数ペア:

[(1, 31017420), (2, 15508710), (3, 10339140), (4, 7754355), (5, 6203484), (6, 5169570), (7, 4431060), (9, 3446380), (10, 3101742), (12, 2584785), (14, 2215530), (15, 2067828), (18, 1723190), (20, 1550871), (21, 1477020), (28, 1107765), (30, 1033914), (35, 886212), (36, 861595), (42, 738510), (45, 689276), (60, 516957), (63, 492340), (70, 443106), (84, 369255), (90, 344638), (103, 301140), (105, 295404), (126, 246170), (140, 221553), (180, 172319), (206, 150570), (210, 147702), (239, 129780), (252, 123085), (309, 100380), (315, 98468), (412, 75285), (420, 73851), (478, 64890), (515, 60228), (618, 50190), (630, 49234), (717, 43260), (721, 43020), (927, 33460), (956, 32445), (1030, 30114), (1195, 25956), (1236, 25095), (1260, 24617), (1434, 21630), (1442, 21510), (1545, 20076), (1673, 18540), (1854, 16730), (2060, 15057), (2151, 14420), (2163, 14340), (2390, 12978), (2868, 10815), (2884, 10755), (3090, 10038), (3346, 9270), (3585, 8652), (3605, 8604), (3708, 8365), (4302, 7210), (4326, 7170), (4635, 6692), (4780, 6489), (5019, 6180)]