640770

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:107

約数の個数: 64

約数和(自身を含む): 1741824

約数和(自身を除く): 1101054

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 31, 39, 53, 62, 65, 78, 93, 106, 130, 155, 159, 186, 195, 265, 310, 318, 390, 403, 465, 530, 689, 795, 806, 930, 1209, 1378, 1590, 1643, 2015, 2067, 2418, 3286, 3445, 4030, 4134, 4929, 6045, 6890, 8215, 9858, 10335, 12090, 16430, 20670, 21359, 24645, 42718, 49290, 64077, 106795, 128154, 213590, 320385, 640770]

約数ペア:

[(1, 640770), (2, 320385), (3, 213590), (5, 128154), (6, 106795), (10, 64077), (13, 49290), (15, 42718), (26, 24645), (30, 21359), (31, 20670), (39, 16430), (53, 12090), (62, 10335), (65, 9858), (78, 8215), (93, 6890), (106, 6045), (130, 4929), (155, 4134), (159, 4030), (186, 3445), (195, 3286), (265, 2418), (310, 2067), (318, 2015), (390, 1643), (403, 1590), (465, 1378), (530, 1209), (689, 930), (795, 806)]