15840340

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{163}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 34550208

約数和(自身を除く): 18709868

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 113, 163, 172, 215, 226, 326, 430, 452, 565, 652, 815, 860, 1130, 1630, 2260, 3260, 4859, 7009, 9718, 14018, 18419, 19436, 24295, 28036, 35045, 36838, 48590, 70090, 73676, 92095, 97180, 140180, 184190, 368380, 792017, 1584034, 3168068, 3960085, 7920170, 15840340]

約数ペア:

[(1, 15840340), (2, 7920170), (4, 3960085), (5, 3168068), (10, 1584034), (20, 792017), (43, 368380), (86, 184190), (113, 140180), (163, 97180), (172, 92095), (215, 73676), (226, 70090), (326, 48590), (430, 36838), (452, 35045), (565, 28036), (652, 24295), (815, 19436), (860, 18419), (1130, 14018), (1630, 9718), (2260, 7009), (3260, 4859)]