253446920

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{20639}}^1$

素因数の和:20957

約数の個数: 32

約数和(自身を含む): 572140800

約数和(自身を除く): 318693880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1228, 1535, 2456, 3070, 6140, 12280, 20639, 41278, 82556, 103195, 165112, 206390, 412780, 825560, 6336173, 12672346, 25344692, 31680865, 50689384, 63361730, 126723460, 253446920]

約数ペア:

[(1, 253446920), (2, 126723460), (4, 63361730), (5, 50689384), (8, 31680865), (10, 25344692), (20, 12672346), (40, 6336173), (307, 825560), (614, 412780), (1228, 206390), (1535, 165112), (2456, 103195), (3070, 82556), (6140, 41278), (12280, 20639)]