19721890

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{563}}^1$

素因数の和:714

約数の個数: 32

約数和(自身を含む): 37034496

約数和(自身を除く): 17312606

約数列:

[1, 2, 5, 10, 31, 62, 113, 155, 226, 310, 563, 565, 1126, 1130, 2815, 3503, 5630, 7006, 17453, 17515, 34906, 35030, 63619, 87265, 127238, 174530, 318095, 636190, 1972189, 3944378, 9860945, 19721890]

約数ペア:

[(1, 19721890), (2, 9860945), (5, 3944378), (10, 1972189), (31, 636190), (62, 318095), (113, 174530), (155, 127238), (226, 87265), (310, 63619), (563, 35030), (565, 34906), (1126, 17515), (1130, 17453), (2815, 7006), (3503, 5630)]