19858910

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^2$

素因数の和:161

約数の個数: 48

約数和(自身を含む): 39000960

約数和(自身を除く): 19142050

約数列:

[1, 2, 5, 10, 29, 31, 47, 58, 62, 94, 145, 155, 235, 290, 310, 470, 899, 1363, 1457, 1798, 2209, 2726, 2914, 4418, 4495, 6815, 7285, 8990, 11045, 13630, 14570, 22090, 42253, 64061, 68479, 84506, 128122, 136958, 211265, 320305, 342395, 422530, 640610, 684790, 1985891, 3971782, 9929455, 19858910]

約数ペア:

[(1, 19858910), (2, 9929455), (5, 3971782), (10, 1985891), (29, 684790), (31, 640610), (47, 422530), (58, 342395), (62, 320305), (94, 211265), (145, 136958), (155, 128122), (235, 84506), (290, 68479), (310, 64061), (470, 42253), (899, 22090), (1363, 14570), (1457, 13630), (1798, 11045), (2209, 8990), (2726, 7285), (2914, 6815), (4418, 4495)]