780520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1$

素因数の和:122

約数の個数: 64

約数和(自身を含む): 2016000

約数和(自身を除く): 1235480

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 79, 95, 104, 130, 152, 158, 190, 247, 260, 316, 380, 395, 494, 520, 632, 760, 790, 988, 1027, 1235, 1501, 1580, 1976, 2054, 2470, 3002, 3160, 4108, 4940, 5135, 6004, 7505, 8216, 9880, 10270, 12008, 15010, 19513, 20540, 30020, 39026, 41080, 60040, 78052, 97565, 156104, 195130, 390260, 780520]

約数ペア:

[(1, 780520), (2, 390260), (4, 195130), (5, 156104), (8, 97565), (10, 78052), (13, 60040), (19, 41080), (20, 39026), (26, 30020), (38, 20540), (40, 19513), (52, 15010), (65, 12008), (76, 10270), (79, 9880), (95, 8216), (104, 7505), (130, 6004), (152, 5135), (158, 4940), (190, 4108), (247, 3160), (260, 3002), (316, 2470), (380, 2054), (395, 1976), (494, 1580), (520, 1501), (632, 1235), (760, 1027), (790, 988)]