18701968

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1$

素因数の和:343

約数の個数: 40

約数和(自身を含む): 37336896

約数和(自身を除く): 18634928

約数列:

[1, 2, 4, 8, 16, 71, 101, 142, 163, 202, 284, 326, 404, 568, 652, 808, 1136, 1304, 1616, 2608, 7171, 11573, 14342, 16463, 23146, 28684, 32926, 46292, 57368, 65852, 92584, 114736, 131704, 185168, 263408, 1168873, 2337746, 4675492, 9350984, 18701968]

約数ペア:

[(1, 18701968), (2, 9350984), (4, 4675492), (8, 2337746), (16, 1168873), (71, 263408), (101, 185168), (142, 131704), (163, 114736), (202, 92584), (284, 65852), (326, 57368), (404, 46292), (568, 32926), (652, 28684), (808, 23146), (1136, 16463), (1304, 14342), (1616, 11573), (2608, 7171)]