20153120

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9689}}^1$

素因数の和:9717

約数の個数: 48

約数和(自身を含む): 51279480

約数和(自身を除く): 31126360

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9689, 19378, 38756, 48445, 77512, 96890, 125957, 155024, 193780, 251914, 310048, 387560, 503828, 629785, 775120, 1007656, 1259570, 1550240, 2015312, 2519140, 4030624, 5038280, 10076560, 20153120]

約数ペア:

[(1, 20153120), (2, 10076560), (4, 5038280), (5, 4030624), (8, 2519140), (10, 2015312), (13, 1550240), (16, 1259570), (20, 1007656), (26, 775120), (32, 629785), (40, 503828), (52, 387560), (65, 310048), (80, 251914), (104, 193780), (130, 155024), (160, 125957), (208, 96890), (260, 77512), (416, 48445), (520, 38756), (1040, 19378), (2080, 9689)]