1290860

素因数分解:

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

素因数の和:150

約数の個数: 48

約数和(自身を含む): 2956800

約数和(自身を除く): 1665940

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 79, 86, 95, 158, 172, 190, 215, 316, 380, 395, 430, 790, 817, 860, 1501, 1580, 1634, 3002, 3268, 3397, 4085, 6004, 6794, 7505, 8170, 13588, 15010, 16340, 16985, 30020, 33970, 64543, 67940, 129086, 258172, 322715, 645430, 1290860]

約数ペア:

[(1, 1290860), (2, 645430), (4, 322715), (5, 258172), (10, 129086), (19, 67940), (20, 64543), (38, 33970), (43, 30020), (76, 16985), (79, 16340), (86, 15010), (95, 13588), (158, 8170), (172, 7505), (190, 6794), (215, 6004), (316, 4085), (380, 3397), (395, 3268), (430, 3002), (790, 1634), (817, 1580), (860, 1501)]