12718640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:270

約数の個数: 80

約数和(自身を含む): 32810400

約数和(自身を除く): 20091760

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 97, 110, 149, 176, 194, 220, 298, 388, 440, 485, 596, 745, 776, 880, 970, 1067, 1192, 1490, 1552, 1639, 1940, 2134, 2384, 2980, 3278, 3880, 4268, 5335, 5960, 6556, 7760, 8195, 8536, 10670, 11920, 13112, 14453, 16390, 17072, 21340, 26224, 28906, 32780, 42680, 57812, 65560, 72265, 85360, 115624, 131120, 144530, 158983, 231248, 289060, 317966, 578120, 635932, 794915, 1156240, 1271864, 1589830, 2543728, 3179660, 6359320, 12718640]

約数ペア:

[(1, 12718640), (2, 6359320), (4, 3179660), (5, 2543728), (8, 1589830), (10, 1271864), (11, 1156240), (16, 794915), (20, 635932), (22, 578120), (40, 317966), (44, 289060), (55, 231248), (80, 158983), (88, 144530), (97, 131120), (110, 115624), (149, 85360), (176, 72265), (194, 65560), (220, 57812), (298, 42680), (388, 32780), (440, 28906), (485, 26224), (596, 21340), (745, 17072), (776, 16390), (880, 14453), (970, 13112), (1067, 11920), (1192, 10670), (1490, 8536), (1552, 8195), (1639, 7760), (1940, 6556), (2134, 5960), (2384, 5335), (2980, 4268), (3278, 3880)]