20180778020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{811}}^1\times {\mathrm{95707}}^1$

素因数の和:96540

約数の個数: 48

約数和(自身を含む): 45696358848

約数和(自身を除く): 25515580828

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 811, 1622, 3244, 4055, 8110, 10543, 16220, 21086, 42172, 52715, 95707, 105430, 191414, 210860, 382828, 478535, 957070, 1244191, 1914140, 2488382, 4976764, 6220955, 12441910, 24883820, 77618377, 155236754, 310473508, 388091885, 776183770, 1009038901, 1552367540, 2018077802, 4036155604, 5045194505, 10090389010, 20180778020]

約数ペア:

[(1, 20180778020), (2, 10090389010), (4, 5045194505), (5, 4036155604), (10, 2018077802), (13, 1552367540), (20, 1009038901), (26, 776183770), (52, 388091885), (65, 310473508), (130, 155236754), (260, 77618377), (811, 24883820), (1622, 12441910), (3244, 6220955), (4055, 4976764), (8110, 2488382), (10543, 1914140), (16220, 1244191), (21086, 957070), (42172, 478535), (52715, 382828), (95707, 210860), (105430, 191414)]