30131780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1571}}^1$

素因数の和:1724

約数の個数: 48

約数和(自身を含む): 72890496

約数和(自身を除く): 42758716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 274, 548, 685, 959, 1370, 1571, 1918, 2740, 3142, 3836, 4795, 6284, 7855, 9590, 10997, 15710, 19180, 21994, 31420, 43988, 54985, 109970, 215227, 219940, 430454, 860908, 1076135, 1506589, 2152270, 3013178, 4304540, 6026356, 7532945, 15065890, 30131780]

約数ペア:

[(1, 30131780), (2, 15065890), (4, 7532945), (5, 6026356), (7, 4304540), (10, 3013178), (14, 2152270), (20, 1506589), (28, 1076135), (35, 860908), (70, 430454), (137, 219940), (140, 215227), (274, 109970), (548, 54985), (685, 43988), (959, 31420), (1370, 21994), (1571, 19180), (1918, 15710), (2740, 10997), (3142, 9590), (3836, 7855), (4795, 6284)]