1657880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 4423680

約数和(自身を除く): 2765800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 191, 217, 248, 280, 310, 382, 434, 620, 764, 868, 955, 1085, 1240, 1337, 1528, 1736, 1910, 2170, 2674, 3820, 4340, 5348, 5921, 6685, 7640, 8680, 10696, 11842, 13370, 23684, 26740, 29605, 41447, 47368, 53480, 59210, 82894, 118420, 165788, 207235, 236840, 331576, 414470, 828940, 1657880]

約数ペア:

[(1, 1657880), (2, 828940), (4, 414470), (5, 331576), (7, 236840), (8, 207235), (10, 165788), (14, 118420), (20, 82894), (28, 59210), (31, 53480), (35, 47368), (40, 41447), (56, 29605), (62, 26740), (70, 23684), (124, 13370), (140, 11842), (155, 10696), (191, 8680), (217, 7640), (248, 6685), (280, 5921), (310, 5348), (382, 4340), (434, 3820), (620, 2674), (764, 2170), (868, 1910), (955, 1736), (1085, 1528), (1240, 1337)]