19886730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1$

素因数の和:419

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 30916470

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 95, 114, 139, 190, 251, 278, 285, 417, 502, 570, 695, 753, 834, 1255, 1390, 1506, 2085, 2510, 2641, 3765, 4170, 4769, 5282, 7530, 7923, 9538, 13205, 14307, 15846, 23845, 26410, 28614, 34889, 39615, 47690, 69778, 71535, 79230, 104667, 143070, 174445, 209334, 348890, 523335, 662891, 1046670, 1325782, 1988673, 3314455, 3977346, 6628910, 9943365, 19886730]

約数ペア:

[(1, 19886730), (2, 9943365), (3, 6628910), (5, 3977346), (6, 3314455), (10, 1988673), (15, 1325782), (19, 1046670), (30, 662891), (38, 523335), (57, 348890), (95, 209334), (114, 174445), (139, 143070), (190, 104667), (251, 79230), (278, 71535), (285, 69778), (417, 47690), (502, 39615), (570, 34889), (695, 28614), (753, 26410), (834, 23845), (1255, 15846), (1390, 14307), (1506, 13205), (2085, 9538), (2510, 7923), (2641, 7530), (3765, 5282), (4170, 4769)]