21663870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{673}}^1$

素因数の和:749

約数の個数: 64

約数和(自身を含む): 55321920

約数和(自身を除く): 33658050

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 37, 58, 74, 87, 111, 145, 174, 185, 222, 290, 370, 435, 555, 673, 870, 1073, 1110, 1346, 2019, 2146, 3219, 3365, 4038, 5365, 6438, 6730, 10095, 10730, 16095, 19517, 20190, 24901, 32190, 39034, 49802, 58551, 74703, 97585, 117102, 124505, 149406, 195170, 249010, 292755, 373515, 585510, 722129, 747030, 1444258, 2166387, 3610645, 4332774, 7221290, 10831935, 21663870]

約数ペア:

[(1, 21663870), (2, 10831935), (3, 7221290), (5, 4332774), (6, 3610645), (10, 2166387), (15, 1444258), (29, 747030), (30, 722129), (37, 585510), (58, 373515), (74, 292755), (87, 249010), (111, 195170), (145, 149406), (174, 124505), (185, 117102), (222, 97585), (290, 74703), (370, 58551), (435, 49802), (555, 39034), (673, 32190), (870, 24901), (1073, 20190), (1110, 19517), (1346, 16095), (2019, 10730), (2146, 10095), (3219, 6730), (3365, 6438), (4038, 5365)]