21207942

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{9901}}^1$

素因数の和:9933

約数の個数: 48

約数和(自身を含む): 55609632

約数和(自身を除く): 34401690

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 34, 42, 51, 63, 102, 119, 126, 153, 238, 306, 357, 714, 1071, 2142, 9901, 19802, 29703, 59406, 69307, 89109, 138614, 168317, 178218, 207921, 336634, 415842, 504951, 623763, 1009902, 1178219, 1247526, 1514853, 2356438, 3029706, 3534657, 7069314, 10603971, 21207942]

約数ペア:

[(1, 21207942), (2, 10603971), (3, 7069314), (6, 3534657), (7, 3029706), (9, 2356438), (14, 1514853), (17, 1247526), (18, 1178219), (21, 1009902), (34, 623763), (42, 504951), (51, 415842), (63, 336634), (102, 207921), (119, 178218), (126, 168317), (153, 138614), (238, 89109), (306, 69307), (357, 59406), (714, 29703), (1071, 19802), (2142, 9901)]