89070920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:558

約数の個数: 64

約数和(自身を含む): 206323200

約数和(自身を除く): 117252280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 79, 142, 158, 284, 316, 355, 395, 397, 568, 632, 710, 790, 794, 1420, 1580, 1588, 1985, 2840, 3160, 3176, 3970, 5609, 7940, 11218, 15880, 22436, 28045, 28187, 31363, 44872, 56090, 56374, 62726, 112180, 112748, 125452, 140935, 156815, 224360, 225496, 250904, 281870, 313630, 563740, 627260, 1127480, 1254520, 2226773, 4453546, 8907092, 11133865, 17814184, 22267730, 44535460, 89070920]

約数ペア:

[(1, 89070920), (2, 44535460), (4, 22267730), (5, 17814184), (8, 11133865), (10, 8907092), (20, 4453546), (40, 2226773), (71, 1254520), (79, 1127480), (142, 627260), (158, 563740), (284, 313630), (316, 281870), (355, 250904), (395, 225496), (397, 224360), (568, 156815), (632, 140935), (710, 125452), (790, 112748), (794, 112180), (1420, 62726), (1580, 56374), (1588, 56090), (1985, 44872), (2840, 31363), (3160, 28187), (3176, 28045), (3970, 22436), (5609, 15880), (7940, 11218)]