1999565540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{953}}^1\times {\mathrm{2141}}^1$

素因数の和:3117

約数の個数: 72

約数和(自身を含む): 4892062392

約数和(自身を除く): 2892496852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 953, 980, 1906, 2141, 3812, 4282, 4765, 6671, 8564, 9530, 10705, 13342, 14987, 19060, 21410, 26684, 29974, 33355, 42820, 46697, 59948, 66710, 74935, 93394, 104909, 133420, 149870, 186788, 209818, 233485, 299740, 419636, 466970, 524545, 933940, 1049090, 2040373, 2098180, 4080746, 8161492, 10201865, 14282611, 20403730, 28565222, 40807460, 57130444, 71413055, 99978277, 142826110, 199956554, 285652220, 399913108, 499891385, 999782770, 1999565540]

約数ペア:

[(1, 1999565540), (2, 999782770), (4, 499891385), (5, 399913108), (7, 285652220), (10, 199956554), (14, 142826110), (20, 99978277), (28, 71413055), (35, 57130444), (49, 40807460), (70, 28565222), (98, 20403730), (140, 14282611), (196, 10201865), (245, 8161492), (490, 4080746), (953, 2098180), (980, 2040373), (1906, 1049090), (2141, 933940), (3812, 524545), (4282, 466970), (4765, 419636), (6671, 299740), (8564, 233485), (9530, 209818), (10705, 186788), (13342, 149870), (14987, 133420), (19060, 104909), (21410, 93394), (26684, 74935), (29974, 66710), (33355, 59948), (42820, 46697)]