20305220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2693}}^1$

素因数の和:2744

約数の個数: 48

約数和(自身を含む): 47522160

約数和(自身を除く): 27216940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 2693, 3770, 5386, 7540, 10772, 13465, 26930, 35009, 53860, 70018, 78097, 140036, 156194, 175045, 312388, 350090, 390485, 700180, 780970, 1015261, 1561940, 2030522, 4061044, 5076305, 10152610, 20305220]

約数ペア:

[(1, 20305220), (2, 10152610), (4, 5076305), (5, 4061044), (10, 2030522), (13, 1561940), (20, 1015261), (26, 780970), (29, 700180), (52, 390485), (58, 350090), (65, 312388), (116, 175045), (130, 156194), (145, 140036), (260, 78097), (290, 70018), (377, 53860), (580, 35009), (754, 26930), (1508, 13465), (1885, 10772), (2693, 7540), (3770, 5386)]