2107980

素因数分解:

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

素因数の和:268

約数の個数: 108

約数和(自身を含む): 7469280

約数和(自身を除く): 5361300

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, 105, 126, 140, 147, 180, 196, 210, 239, 245, 252, 294, 315, 420, 441, 478, 490, 588, 630, 717, 735, 882, 956, 980, 1195, 1260, 1434, 1470, 1673, 1764, 2151, 2205, 2390, 2868, 2940, 3346, 3585, 4302, 4410, 4780, 5019, 6692, 7170, 8365, 8604, 8820, 10038, 10755, 11711, 14340, 15057, 16730, 20076, 21510, 23422, 25095, 30114, 33460, 35133, 43020, 46844, 50190, 58555, 60228, 70266, 75285, 100380, 105399, 117110, 140532, 150570, 175665, 210798, 234220, 301140, 351330, 421596, 526995, 702660, 1053990, 2107980]

約数ペア:

[(1, 2107980), (2, 1053990), (3, 702660), (4, 526995), (5, 421596), (6, 351330), (7, 301140), (9, 234220), (10, 210798), (12, 175665), (14, 150570), (15, 140532), (18, 117110), (20, 105399), (21, 100380), (28, 75285), (30, 70266), (35, 60228), (36, 58555), (42, 50190), (45, 46844), (49, 43020), (60, 35133), (63, 33460), (70, 30114), (84, 25095), (90, 23422), (98, 21510), (105, 20076), (126, 16730), (140, 15057), (147, 14340), (180, 11711), (196, 10755), (210, 10038), (239, 8820), (245, 8604), (252, 8365), (294, 7170), (315, 6692), (420, 5019), (441, 4780), (478, 4410), (490, 4302), (588, 3585), (630, 3346), (717, 2940), (735, 2868), (882, 2390), (956, 2205), (980, 2151), (1195, 1764), (1260, 1673), (1434, 1470)]