20881711480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{277}}^1\times {\mathrm{1783}}^1$

素因数の和:2229

約数の個数: 128

約数和(自身を含む): 54276986880

約数和(自身を除く): 33395275400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 151, 277, 280, 302, 554, 604, 755, 1057, 1108, 1208, 1385, 1510, 1783, 1939, 2114, 2216, 2770, 3020, 3566, 3878, 4228, 5285, 5540, 6040, 7132, 7756, 8456, 8915, 9695, 10570, 11080, 12481, 14264, 15512, 17830, 19390, 21140, 24962, 35660, 38780, 41827, 42280, 49924, 62405, 71320, 77560, 83654, 99848, 124810, 167308, 209135, 249620, 269233, 292789, 334616, 418270, 493891, 499240, 538466, 585578, 836540, 987782, 1076932, 1171156, 1346165, 1463945, 1673080, 1884631, 1975564, 2153864, 2342312, 2469455, 2692330, 2927890, 3457237, 3769262, 3951128, 4938910, 5384660, 5855780, 6914474, 7538524, 9423155, 9877820, 10769320, 11711560, 13828948, 15077048, 17286185, 18846310, 19755640, 27657896, 34572370, 37692620, 69144740, 74577541, 75385240, 138289480, 149155082, 298310164, 372887705, 522042787, 596620328, 745775410, 1044085574, 1491550820, 2088171148, 2610213935, 2983101640, 4176342296, 5220427870, 10440855740, 20881711480]

約数ペア:

[(1, 20881711480), (2, 10440855740), (4, 5220427870), (5, 4176342296), (7, 2983101640), (8, 2610213935), (10, 2088171148), (14, 1491550820), (20, 1044085574), (28, 745775410), (35, 596620328), (40, 522042787), (56, 372887705), (70, 298310164), (140, 149155082), (151, 138289480), (277, 75385240), (280, 74577541), (302, 69144740), (554, 37692620), (604, 34572370), (755, 27657896), (1057, 19755640), (1108, 18846310), (1208, 17286185), (1385, 15077048), (1510, 13828948), (1783, 11711560), (1939, 10769320), (2114, 9877820), (2216, 9423155), (2770, 7538524), (3020, 6914474), (3566, 5855780), (3878, 5384660), (4228, 4938910), (5285, 3951128), (5540, 3769262), (6040, 3457237), (7132, 2927890), (7756, 2692330), (8456, 2469455), (8915, 2342312), (9695, 2153864), (10570, 1975564), (11080, 1884631), (12481, 1673080), (14264, 1463945), (15512, 1346165), (17830, 1171156), (19390, 1076932), (21140, 987782), (24962, 836540), (35660, 585578), (38780, 538466), (41827, 499240), (42280, 493891), (49924, 418270), (62405, 334616), (71320, 292789), (77560, 269233), (83654, 249620), (99848, 209135), (124810, 167308)]