128430440

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{23099}}^1$

素因数の和:23249

約数の個数: 32

約数和(自身を含む): 291060000

約数和(自身を除く): 162629560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 23099, 46198, 92396, 115495, 184792, 230990, 461980, 923960, 3210761, 6421522, 12843044, 16053805, 25686088, 32107610, 64215220, 128430440]

約数ペア:

[(1, 128430440), (2, 64215220), (4, 32107610), (5, 25686088), (8, 16053805), (10, 12843044), (20, 6421522), (40, 3210761), (139, 923960), (278, 461980), (556, 230990), (695, 184792), (1112, 115495), (1390, 92396), (2780, 46198), (5560, 23099)]