81273920

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2791}}^1$

素因数の和:2828

約数の個数: 112

約数和(自身を含む): 238280448

約数和(自身を除く): 157006528

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 320, 364, 416, 448, 455, 520, 560, 728, 832, 910, 1040, 1120, 1456, 1820, 2080, 2240, 2791, 2912, 3640, 4160, 5582, 5824, 7280, 11164, 13955, 14560, 19537, 22328, 27910, 29120, 36283, 39074, 44656, 55820, 72566, 78148, 89312, 97685, 111640, 145132, 156296, 178624, 181415, 195370, 223280, 253981, 290264, 312592, 362830, 390740, 446560, 507962, 580528, 625184, 725660, 781480, 893120, 1015924, 1161056, 1250368, 1269905, 1451320, 1562960, 2031848, 2322112, 2539810, 2902640, 3125920, 4063696, 5079620, 5805280, 6251840, 8127392, 10159240, 11610560, 16254784, 20318480, 40636960, 81273920]

約数ペア:

[(1, 81273920), (2, 40636960), (4, 20318480), (5, 16254784), (7, 11610560), (8, 10159240), (10, 8127392), (13, 6251840), (14, 5805280), (16, 5079620), (20, 4063696), (26, 3125920), (28, 2902640), (32, 2539810), (35, 2322112), (40, 2031848), (52, 1562960), (56, 1451320), (64, 1269905), (65, 1250368), (70, 1161056), (80, 1015924), (91, 893120), (104, 781480), (112, 725660), (130, 625184), (140, 580528), (160, 507962), (182, 446560), (208, 390740), (224, 362830), (260, 312592), (280, 290264), (320, 253981), (364, 223280), (416, 195370), (448, 181415), (455, 178624), (520, 156296), (560, 145132), (728, 111640), (832, 97685), (910, 89312), (1040, 78148), (1120, 72566), (1456, 55820), (1820, 44656), (2080, 39074), (2240, 36283), (2791, 29120), (2912, 27910), (3640, 22328), (4160, 19537), (5582, 14560), (5824, 13955), (7280, 11164)]