12798640

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1019}}^1$

素因数の和:1189

約数の個数: 40

約数和(自身を含む): 29975760

約数和(自身を除く): 17177120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 628, 785, 1019, 1256, 1570, 2038, 2512, 3140, 4076, 5095, 6280, 8152, 10190, 12560, 16304, 20380, 40760, 81520, 159983, 319966, 639932, 799915, 1279864, 1599830, 2559728, 3199660, 6399320, 12798640]

約数ペア:

[(1, 12798640), (2, 6399320), (4, 3199660), (5, 2559728), (8, 1599830), (10, 1279864), (16, 799915), (20, 639932), (40, 319966), (80, 159983), (157, 81520), (314, 40760), (628, 20380), (785, 16304), (1019, 12560), (1256, 10190), (1570, 8152), (2038, 6280), (2512, 5095), (3140, 4076)]