645430

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:148

約数の個数: 32

約数和(自身を含む): 1267200

約数和(自身を除く): 621770

約数列:

[1, 2, 5, 10, 19, 38, 43, 79, 86, 95, 158, 190, 215, 395, 430, 790, 817, 1501, 1634, 3002, 3397, 4085, 6794, 7505, 8170, 15010, 16985, 33970, 64543, 129086, 322715, 645430]

約数ペア:

[(1, 645430), (2, 322715), (5, 129086), (10, 64543), (19, 33970), (38, 16985), (43, 15010), (79, 8170), (86, 7505), (95, 6794), (158, 4085), (190, 3397), (215, 3002), (395, 1634), (430, 1501), (790, 817)]