21228870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1877}}^1$

素因数の和:1929

約数の個数: 64

約数和(自身を含む): 56790720

約数和(自身を除く): 35561850

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 29, 30, 39, 58, 65, 78, 87, 130, 145, 174, 195, 290, 377, 390, 435, 754, 870, 1131, 1877, 1885, 2262, 3754, 3770, 5631, 5655, 9385, 11262, 11310, 18770, 24401, 28155, 48802, 54433, 56310, 73203, 108866, 122005, 146406, 163299, 244010, 272165, 326598, 366015, 544330, 707629, 732030, 816495, 1415258, 1632990, 2122887, 3538145, 4245774, 7076290, 10614435, 21228870]

約数ペア:

[(1, 21228870), (2, 10614435), (3, 7076290), (5, 4245774), (6, 3538145), (10, 2122887), (13, 1632990), (15, 1415258), (26, 816495), (29, 732030), (30, 707629), (39, 544330), (58, 366015), (65, 326598), (78, 272165), (87, 244010), (130, 163299), (145, 146406), (174, 122005), (195, 108866), (290, 73203), (377, 56310), (390, 54433), (435, 48802), (754, 28155), (870, 24401), (1131, 18770), (1877, 11310), (1885, 11262), (2262, 9385), (3754, 5655), (3770, 5631)]