20707740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{3967}}^1$

素因数の和:4011

約数の個数: 72

約数和(自身を含む): 64995840

約数和(自身を除く): 44288100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 3967, 5220, 7934, 11901, 15868, 19835, 23802, 35703, 39670, 47604, 59505, 71406, 79340, 115043, 119010, 142812, 178515, 230086, 238020, 345129, 357030, 460172, 575215, 690258, 714060, 1035387, 1150430, 1380516, 1725645, 2070774, 2300860, 3451290, 4141548, 5176935, 6902580, 10353870, 20707740]

約数ペア:

[(1, 20707740), (2, 10353870), (3, 6902580), (4, 5176935), (5, 4141548), (6, 3451290), (9, 2300860), (10, 2070774), (12, 1725645), (15, 1380516), (18, 1150430), (20, 1035387), (29, 714060), (30, 690258), (36, 575215), (45, 460172), (58, 357030), (60, 345129), (87, 238020), (90, 230086), (116, 178515), (145, 142812), (174, 119010), (180, 115043), (261, 79340), (290, 71406), (348, 59505), (435, 47604), (522, 39670), (580, 35703), (870, 23802), (1044, 19835), (1305, 15868), (1740, 11901), (2610, 7934), (3967, 5220)]