128008840

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{19163}}^1$

素因数の和:19341

約数の個数: 32

約数和(自身を含む): 289759680

約数和(自身を除く): 161750840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 3340, 6680, 19163, 38326, 76652, 95815, 153304, 191630, 383260, 766520, 3200221, 6400442, 12800884, 16001105, 25601768, 32002210, 64004420, 128008840]

約数ペア:

[(1, 128008840), (2, 64004420), (4, 32002210), (5, 25601768), (8, 16001105), (10, 12800884), (20, 6400442), (40, 3200221), (167, 766520), (334, 383260), (668, 191630), (835, 153304), (1336, 95815), (1670, 76652), (3340, 38326), (6680, 19163)]