281323360

素因数分解:

$2^5\times 5^1\times {\mathrm{491}}^1\times {\mathrm{3581}}^1$

素因数の和:4087

約数の個数: 48

約数和(自身を含む): 666166032

約数和(自身を除く): 384842672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 491, 982, 1964, 2455, 3581, 3928, 4910, 7162, 7856, 9820, 14324, 15712, 17905, 19640, 28648, 35810, 39280, 57296, 71620, 78560, 114592, 143240, 286480, 572960, 1758271, 3516542, 7033084, 8791355, 14066168, 17582710, 28132336, 35165420, 56264672, 70330840, 140661680, 281323360]

約数ペア:

[(1, 281323360), (2, 140661680), (4, 70330840), (5, 56264672), (8, 35165420), (10, 28132336), (16, 17582710), (20, 14066168), (32, 8791355), (40, 7033084), (80, 3516542), (160, 1758271), (491, 572960), (982, 286480), (1964, 143240), (2455, 114592), (3581, 78560), (3928, 71620), (4910, 57296), (7162, 39280), (7856, 35810), (9820, 28648), (14324, 19640), (15712, 17905)]