12789980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:475

約数の個数: 72

約数和(自身を含む): 32328576

約数和(自身を除く): 19538596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 421, 434, 490, 620, 842, 868, 980, 1085, 1519, 1684, 2105, 2170, 2947, 3038, 4210, 4340, 5894, 6076, 7595, 8420, 11788, 13051, 14735, 15190, 20629, 26102, 29470, 30380, 41258, 52204, 58940, 65255, 82516, 91357, 103145, 130510, 182714, 206290, 261020, 365428, 412580, 456785, 639499, 913570, 1278998, 1827140, 2557996, 3197495, 6394990, 12789980]

約数ペア:

[(1, 12789980), (2, 6394990), (4, 3197495), (5, 2557996), (7, 1827140), (10, 1278998), (14, 913570), (20, 639499), (28, 456785), (31, 412580), (35, 365428), (49, 261020), (62, 206290), (70, 182714), (98, 130510), (124, 103145), (140, 91357), (155, 82516), (196, 65255), (217, 58940), (245, 52204), (310, 41258), (421, 30380), (434, 29470), (490, 26102), (620, 20629), (842, 15190), (868, 14735), (980, 13051), (1085, 11788), (1519, 8420), (1684, 7595), (2105, 6076), (2170, 5894), (2947, 4340), (3038, 4210)]