20641910

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:185

約数の個数: 64

約数和(自身を含む): 41990400

約数和(自身を除く): 21348490

約数列:

[1, 2, 5, 10, 17, 29, 34, 53, 58, 79, 85, 106, 145, 158, 170, 265, 290, 395, 493, 530, 790, 901, 986, 1343, 1537, 1802, 2291, 2465, 2686, 3074, 4187, 4505, 4582, 4930, 6715, 7685, 8374, 9010, 11455, 13430, 15370, 20935, 22910, 26129, 38947, 41870, 52258, 71179, 77894, 121423, 130645, 142358, 194735, 242846, 261290, 355895, 389470, 607115, 711790, 1214230, 2064191, 4128382, 10320955, 20641910]

約数ペア:

[(1, 20641910), (2, 10320955), (5, 4128382), (10, 2064191), (17, 1214230), (29, 711790), (34, 607115), (53, 389470), (58, 355895), (79, 261290), (85, 242846), (106, 194735), (145, 142358), (158, 130645), (170, 121423), (265, 77894), (290, 71179), (395, 52258), (493, 41870), (530, 38947), (790, 26129), (901, 22910), (986, 20935), (1343, 15370), (1537, 13430), (1802, 11455), (2291, 9010), (2465, 8374), (2686, 7685), (3074, 6715), (4187, 4930), (4505, 4582)]