20780732

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{293}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 23672068

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 149, 238, 293, 298, 476, 586, 596, 1043, 1172, 2051, 2086, 2533, 4102, 4172, 4981, 5066, 8204, 9962, 10132, 17731, 19924, 34867, 35462, 43657, 69734, 70924, 87314, 139468, 174628, 305599, 611198, 742169, 1222396, 1484338, 2968676, 5195183, 10390366, 20780732]

約数ペア:

[(1, 20780732), (2, 10390366), (4, 5195183), (7, 2968676), (14, 1484338), (17, 1222396), (28, 742169), (34, 611198), (68, 305599), (119, 174628), (149, 139468), (238, 87314), (293, 70924), (298, 69734), (476, 43657), (586, 35462), (596, 34867), (1043, 19924), (1172, 17731), (2051, 10132), (2086, 9962), (2533, 8204), (4102, 5066), (4172, 4981)]