20258820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{3881}}^1$

素因数の和:3925

約数の個数: 72

約数和(自身を含む): 63587160

約数和(自身を除く): 43328340

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, 3881, 5220, 7762, 11643, 15524, 19405, 23286, 34929, 38810, 46572, 58215, 69858, 77620, 112549, 116430, 139716, 174645, 225098, 232860, 337647, 349290, 450196, 562745, 675294, 698580, 1012941, 1125490, 1350588, 1688235, 2025882, 2250980, 3376470, 4051764, 5064705, 6752940, 10129410, 20258820]

約数ペア:

[(1, 20258820), (2, 10129410), (3, 6752940), (4, 5064705), (5, 4051764), (6, 3376470), (9, 2250980), (10, 2025882), (12, 1688235), (15, 1350588), (18, 1125490), (20, 1012941), (29, 698580), (30, 675294), (36, 562745), (45, 450196), (58, 349290), (60, 337647), (87, 232860), (90, 225098), (116, 174645), (145, 139716), (174, 116430), (180, 112549), (261, 77620), (290, 69858), (348, 58215), (435, 46572), (522, 38810), (580, 34929), (870, 23286), (1044, 19405), (1305, 15524), (1740, 11643), (2610, 7762), (3881, 5220)]