72281840

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{11437}}^1$

素因数の和:11529

約数の個数: 40

約数和(自身を含む): 170197440

約数和(自身を除く): 97915600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 11437, 22874, 45748, 57185, 91496, 114370, 182992, 228740, 457480, 903523, 914960, 1807046, 3614092, 4517615, 7228184, 9035230, 14456368, 18070460, 36140920, 72281840]

約数ペア:

[(1, 72281840), (2, 36140920), (4, 18070460), (5, 14456368), (8, 9035230), (10, 7228184), (16, 4517615), (20, 3614092), (40, 1807046), (79, 914960), (80, 903523), (158, 457480), (316, 228740), (395, 182992), (632, 114370), (790, 91496), (1264, 57185), (1580, 45748), (3160, 22874), (6320, 11437)]