161878280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{130547}}^1$

素因数の和:130589

約数の個数: 32

約数和(自身を含む): 375978240

約数和(自身を除く): 214099960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 130547, 261094, 522188, 652735, 1044376, 1305470, 2610940, 4046957, 5221880, 8093914, 16187828, 20234785, 32375656, 40469570, 80939140, 161878280]

約数ペア:

[(1, 161878280), (2, 80939140), (4, 40469570), (5, 32375656), (8, 20234785), (10, 16187828), (20, 8093914), (31, 5221880), (40, 4046957), (62, 2610940), (124, 1305470), (155, 1044376), (248, 652735), (310, 522188), (620, 261094), (1240, 130547)]