20778964

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 40960080

約数和(自身を除く): 20181116

約数列:

[1, 2, 4, 17, 29, 34, 41, 58, 68, 82, 116, 164, 257, 493, 514, 697, 986, 1028, 1189, 1394, 1972, 2378, 2788, 4369, 4756, 7453, 8738, 10537, 14906, 17476, 20213, 21074, 29812, 40426, 42148, 80852, 126701, 179129, 253402, 305573, 358258, 506804, 611146, 716516, 1222292, 5194741, 10389482, 20778964]

約数ペア:

[(1, 20778964), (2, 10389482), (4, 5194741), (17, 1222292), (29, 716516), (34, 611146), (41, 506804), (58, 358258), (68, 305573), (82, 253402), (116, 179129), (164, 126701), (257, 80852), (493, 42148), (514, 40426), (697, 29812), (986, 21074), (1028, 20213), (1189, 17476), (1394, 14906), (1972, 10537), (2378, 8738), (2788, 7453), (4369, 4756)]