1278160

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1229}}^1$

素因数の和:1255

約数の個数: 40

約数和(自身を含む): 3202920

約数和(自身を除く): 1924760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1229, 2458, 4916, 6145, 9832, 12290, 15977, 19664, 24580, 31954, 49160, 63908, 79885, 98320, 127816, 159770, 255632, 319540, 639080, 1278160]

約数ペア:

[(1, 1278160), (2, 639080), (4, 319540), (5, 255632), (8, 159770), (10, 127816), (13, 98320), (16, 79885), (20, 63908), (26, 49160), (40, 31954), (52, 24580), (65, 19664), (80, 15977), (104, 12290), (130, 9832), (208, 6145), (260, 4916), (520, 2458), (1040, 1229)]