81615640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{6317}}^1$

素因数の和:6364

約数の個数: 64

約数和(自身を含む): 204703200

約数和(自身を除く): 123087560

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1292, 1615, 2584, 3230, 6317, 6460, 12634, 12920, 25268, 31585, 50536, 63170, 107389, 120023, 126340, 214778, 240046, 252680, 429556, 480092, 536945, 600115, 859112, 960184, 1073890, 1200230, 2040391, 2147780, 2400460, 4080782, 4295560, 4800920, 8161564, 10201955, 16323128, 20403910, 40807820, 81615640]

約数ペア:

[(1, 81615640), (2, 40807820), (4, 20403910), (5, 16323128), (8, 10201955), (10, 8161564), (17, 4800920), (19, 4295560), (20, 4080782), (34, 2400460), (38, 2147780), (40, 2040391), (68, 1200230), (76, 1073890), (85, 960184), (95, 859112), (136, 600115), (152, 536945), (170, 480092), (190, 429556), (323, 252680), (340, 240046), (380, 214778), (646, 126340), (680, 120023), (760, 107389), (1292, 63170), (1615, 50536), (2584, 31585), (3230, 25268), (6317, 12920), (6460, 12634)]