21206514

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{4243}}^1$

素因数の和:4279

約数の個数: 48

約数和(自身を含む): 52252128

約数和(自身を除く): 31045614

約数列:

[1, 2, 3, 6, 7, 14, 17, 21, 34, 42, 49, 51, 98, 102, 119, 147, 238, 294, 357, 714, 833, 1666, 2499, 4243, 4998, 8486, 12729, 25458, 29701, 59402, 72131, 89103, 144262, 178206, 207907, 216393, 415814, 432786, 504917, 623721, 1009834, 1247442, 1514751, 3029502, 3534419, 7068838, 10603257, 21206514]

約数ペア:

[(1, 21206514), (2, 10603257), (3, 7068838), (6, 3534419), (7, 3029502), (14, 1514751), (17, 1247442), (21, 1009834), (34, 623721), (42, 504917), (49, 432786), (51, 415814), (98, 216393), (102, 207907), (119, 178206), (147, 144262), (238, 89103), (294, 72131), (357, 59402), (714, 29701), (833, 25458), (1666, 12729), (2499, 8486), (4243, 4998)]