19604560

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:236

約数の個数: 80

約数和(自身を含む): 48121920

約数和(自身を除く): 28517360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 43, 80, 82, 86, 139, 164, 172, 205, 215, 278, 328, 344, 410, 430, 556, 656, 688, 695, 820, 860, 1112, 1390, 1640, 1720, 1763, 2224, 2780, 3280, 3440, 3526, 5560, 5699, 5977, 7052, 8815, 11120, 11398, 11954, 14104, 17630, 22796, 23908, 28208, 28495, 29885, 35260, 45592, 47816, 56990, 59770, 70520, 91184, 95632, 113980, 119540, 141040, 227960, 239080, 245057, 455920, 478160, 490114, 980228, 1225285, 1960456, 2450570, 3920912, 4901140, 9802280, 19604560]

約数ペア:

[(1, 19604560), (2, 9802280), (4, 4901140), (5, 3920912), (8, 2450570), (10, 1960456), (16, 1225285), (20, 980228), (40, 490114), (41, 478160), (43, 455920), (80, 245057), (82, 239080), (86, 227960), (139, 141040), (164, 119540), (172, 113980), (205, 95632), (215, 91184), (278, 70520), (328, 59770), (344, 56990), (410, 47816), (430, 45592), (556, 35260), (656, 29885), (688, 28495), (695, 28208), (820, 23908), (860, 22796), (1112, 17630), (1390, 14104), (1640, 11954), (1720, 11398), (1763, 11120), (2224, 8815), (2780, 7052), (3280, 5977), (3440, 5699), (3526, 5560)]