639349060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{449}}^1\times {\mathrm{1453}}^1$

素因数の和:1925

約数の個数: 72

約数和(自身を含む): 1566394200

約数和(自身を除く): 927045140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 449, 490, 898, 980, 1453, 1796, 2245, 2906, 3143, 4490, 5812, 6286, 7265, 8980, 10171, 12572, 14530, 15715, 20342, 22001, 29060, 31430, 40684, 44002, 50855, 62860, 71197, 88004, 101710, 110005, 142394, 203420, 220010, 284788, 355985, 440020, 652397, 711970, 1304794, 1423940, 2609588, 3261985, 4566779, 6523970, 9133558, 13047940, 18267116, 22833895, 31967453, 45667790, 63934906, 91335580, 127869812, 159837265, 319674530, 639349060]

約数ペア:

[(1, 639349060), (2, 319674530), (4, 159837265), (5, 127869812), (7, 91335580), (10, 63934906), (14, 45667790), (20, 31967453), (28, 22833895), (35, 18267116), (49, 13047940), (70, 9133558), (98, 6523970), (140, 4566779), (196, 3261985), (245, 2609588), (449, 1423940), (490, 1304794), (898, 711970), (980, 652397), (1453, 440020), (1796, 355985), (2245, 284788), (2906, 220010), (3143, 203420), (4490, 142394), (5812, 110005), (6286, 101710), (7265, 88004), (8980, 71197), (10171, 62860), (12572, 50855), (14530, 44002), (15715, 40684), (20342, 31430), (22001, 29060)]