20509320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13147}}^1$

素因数の和:13174

約数の個数: 64

約数和(自身を含む): 66265920

約数和(自身を除く): 45756600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13147, 26294, 39441, 52588, 65735, 78882, 105176, 131470, 157764, 170911, 197205, 262940, 315528, 341822, 394410, 512733, 525880, 683644, 788820, 854555, 1025466, 1367288, 1577640, 1709110, 2050932, 2563665, 3418220, 4101864, 5127330, 6836440, 10254660, 20509320]

約数ペア:

[(1, 20509320), (2, 10254660), (3, 6836440), (4, 5127330), (5, 4101864), (6, 3418220), (8, 2563665), (10, 2050932), (12, 1709110), (13, 1577640), (15, 1367288), (20, 1025466), (24, 854555), (26, 788820), (30, 683644), (39, 525880), (40, 512733), (52, 394410), (60, 341822), (65, 315528), (78, 262940), (104, 197205), (120, 170911), (130, 157764), (156, 131470), (195, 105176), (260, 78882), (312, 65735), (390, 52588), (520, 39441), (780, 26294), (1560, 13147)]