25120420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1223}}^1$

素因数の和:1324

約数の個数: 48

約数和(自身を含む): 57576960

約数和(自身を除く): 32456540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 1027, 1223, 1580, 2054, 2446, 4108, 4892, 5135, 6115, 10270, 12230, 15899, 20540, 24460, 31798, 63596, 79495, 96617, 158990, 193234, 317980, 386468, 483085, 966170, 1256021, 1932340, 2512042, 5024084, 6280105, 12560210, 25120420]

約数ペア:

[(1, 25120420), (2, 12560210), (4, 6280105), (5, 5024084), (10, 2512042), (13, 1932340), (20, 1256021), (26, 966170), (52, 483085), (65, 386468), (79, 317980), (130, 193234), (158, 158990), (260, 96617), (316, 79495), (395, 63596), (790, 31798), (1027, 24460), (1223, 20540), (1580, 15899), (2054, 12230), (2446, 10270), (4108, 6115), (4892, 5135)]