28856480

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^2$

素因数の和:238

約数の個数: 72

約数和(自身を含む): 72891252

約数和(自身を除く): 44034772

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 103, 136, 160, 170, 206, 272, 340, 412, 515, 544, 680, 824, 1030, 1360, 1648, 1751, 2060, 2720, 3296, 3502, 4120, 7004, 8240, 8755, 10609, 14008, 16480, 17510, 21218, 28016, 35020, 42436, 53045, 56032, 70040, 84872, 106090, 140080, 169744, 180353, 212180, 280160, 339488, 360706, 424360, 721412, 848720, 901765, 1442824, 1697440, 1803530, 2885648, 3607060, 5771296, 7214120, 14428240, 28856480]

約数ペア:

[(1, 28856480), (2, 14428240), (4, 7214120), (5, 5771296), (8, 3607060), (10, 2885648), (16, 1803530), (17, 1697440), (20, 1442824), (32, 901765), (34, 848720), (40, 721412), (68, 424360), (80, 360706), (85, 339488), (103, 280160), (136, 212180), (160, 180353), (170, 169744), (206, 140080), (272, 106090), (340, 84872), (412, 70040), (515, 56032), (544, 53045), (680, 42436), (824, 35020), (1030, 28016), (1360, 21218), (1648, 17510), (1751, 16480), (2060, 14008), (2720, 10609), (3296, 8755), (3502, 8240), (4120, 7004)]