126897980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{6481}}^1$

素因数の和:6590

約数の個数: 48

約数和(自身を含む): 294023520

約数和(自身を除く): 167125540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 3916, 4895, 6481, 9790, 12962, 19580, 25924, 32405, 64810, 71291, 129620, 142582, 285164, 356455, 576809, 712910, 1153618, 1425820, 2307236, 2884045, 5768090, 6344899, 11536180, 12689798, 25379596, 31724495, 63448990, 126897980]

約数ペア:

[(1, 126897980), (2, 63448990), (4, 31724495), (5, 25379596), (10, 12689798), (11, 11536180), (20, 6344899), (22, 5768090), (44, 2884045), (55, 2307236), (89, 1425820), (110, 1153618), (178, 712910), (220, 576809), (356, 356455), (445, 285164), (890, 142582), (979, 129620), (1780, 71291), (1958, 64810), (3916, 32405), (4895, 25924), (6481, 19580), (9790, 12962)]