1520375020

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{419}}^1\times {\mathrm{457}}^1$

素因数の和:1282

約数の個数: 48

約数和(自身を含む): 3215489760

約数和(自身を除く): 1695114740

約数列:

[1, 2, 4, 5, 10, 20, 397, 419, 457, 794, 838, 914, 1588, 1676, 1828, 1985, 2095, 2285, 3970, 4190, 4570, 7940, 8380, 9140, 166343, 181429, 191483, 332686, 362858, 382966, 665372, 725716, 765932, 831715, 907145, 957415, 1663430, 1814290, 1914830, 3326860, 3628580, 3829660, 76018751, 152037502, 304075004, 380093755, 760187510, 1520375020]

約数ペア:

[(1, 1520375020), (2, 760187510), (4, 380093755), (5, 304075004), (10, 152037502), (20, 76018751), (397, 3829660), (419, 3628580), (457, 3326860), (794, 1914830), (838, 1814290), (914, 1663430), (1588, 957415), (1676, 907145), (1828, 831715), (1985, 765932), (2095, 725716), (2285, 665372), (3970, 382966), (4190, 362858), (4570, 332686), (7940, 191483), (8380, 181429), (9140, 166343)]