389435980

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{181}}^1\times {\mathrm{601}}^1$

素因数の和:970

約数の個数: 48

約数和(自身を含む): 828303840

約数和(自身を除く): 438867860

約数列:

[1, 2, 4, 5, 10, 20, 179, 181, 358, 362, 601, 716, 724, 895, 905, 1202, 1790, 1810, 2404, 3005, 3580, 3620, 6010, 12020, 32399, 64798, 107579, 108781, 129596, 161995, 215158, 217562, 323990, 430316, 435124, 537895, 543905, 647980, 1075790, 1087810, 2151580, 2175620, 19471799, 38943598, 77887196, 97358995, 194717990, 389435980]

約数ペア:

[(1, 389435980), (2, 194717990), (4, 97358995), (5, 77887196), (10, 38943598), (20, 19471799), (179, 2175620), (181, 2151580), (358, 1087810), (362, 1075790), (601, 647980), (716, 543905), (724, 537895), (895, 435124), (905, 430316), (1202, 323990), (1790, 217562), (1810, 215158), (2404, 161995), (3005, 129596), (3580, 108781), (3620, 107579), (6010, 64798), (12020, 32399)]