1561040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1$

素因数の和:124

約数の個数: 80

約数和(自身を含む): 4166400

約数和(自身を除く): 2605360

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 79, 80, 95, 104, 130, 152, 158, 190, 208, 247, 260, 304, 316, 380, 395, 494, 520, 632, 760, 790, 988, 1027, 1040, 1235, 1264, 1501, 1520, 1580, 1976, 2054, 2470, 3002, 3160, 3952, 4108, 4940, 5135, 6004, 6320, 7505, 8216, 9880, 10270, 12008, 15010, 16432, 19513, 19760, 20540, 24016, 30020, 39026, 41080, 60040, 78052, 82160, 97565, 120080, 156104, 195130, 312208, 390260, 780520, 1561040]

約数ペア:

[(1, 1561040), (2, 780520), (4, 390260), (5, 312208), (8, 195130), (10, 156104), (13, 120080), (16, 97565), (19, 82160), (20, 78052), (26, 60040), (38, 41080), (40, 39026), (52, 30020), (65, 24016), (76, 20540), (79, 19760), (80, 19513), (95, 16432), (104, 15010), (130, 12008), (152, 10270), (158, 9880), (190, 8216), (208, 7505), (247, 6320), (260, 6004), (304, 5135), (316, 4940), (380, 4108), (395, 3952), (494, 3160), (520, 3002), (632, 2470), (760, 2054), (790, 1976), (988, 1580), (1027, 1520), (1040, 1501), (1235, 1264)]