81435760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4691}}^1$

素因数の和:4742

約数の個数: 80

約数和(自身を含む): 223414272

約数和(自身を除く): 141978512

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1240, 1736, 2170, 2480, 3472, 4340, 4691, 8680, 9382, 17360, 18764, 23455, 32837, 37528, 46910, 65674, 75056, 93820, 131348, 145421, 164185, 187640, 262696, 290842, 328370, 375280, 525392, 581684, 656740, 727105, 1017947, 1163368, 1313480, 1454210, 2035894, 2326736, 2626960, 2908420, 4071788, 5089735, 5816840, 8143576, 10179470, 11633680, 16287152, 20358940, 40717880, 81435760]

約数ペア:

[(1, 81435760), (2, 40717880), (4, 20358940), (5, 16287152), (7, 11633680), (8, 10179470), (10, 8143576), (14, 5816840), (16, 5089735), (20, 4071788), (28, 2908420), (31, 2626960), (35, 2326736), (40, 2035894), (56, 1454210), (62, 1313480), (70, 1163368), (80, 1017947), (112, 727105), (124, 656740), (140, 581684), (155, 525392), (217, 375280), (248, 328370), (280, 290842), (310, 262696), (434, 187640), (496, 164185), (560, 145421), (620, 131348), (868, 93820), (1085, 75056), (1240, 65674), (1736, 46910), (2170, 37528), (2480, 32837), (3472, 23455), (4340, 18764), (4691, 17360), (8680, 9382)]