21473914

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:259

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22071686

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 41, 77, 82, 133, 154, 179, 209, 266, 287, 358, 418, 451, 574, 779, 902, 1253, 1463, 1558, 1969, 2506, 2926, 3157, 3401, 3938, 5453, 6314, 6802, 7339, 8569, 10906, 13783, 14678, 17138, 23807, 27566, 37411, 47614, 51373, 59983, 74822, 80729, 102746, 119966, 139441, 161458, 261877, 278882, 523754, 565103, 976087, 1130206, 1533851, 1952174, 3067702, 10736957, 21473914]

約数ペア:

[(1, 21473914), (2, 10736957), (7, 3067702), (11, 1952174), (14, 1533851), (19, 1130206), (22, 976087), (38, 565103), (41, 523754), (77, 278882), (82, 261877), (133, 161458), (154, 139441), (179, 119966), (209, 102746), (266, 80729), (287, 74822), (358, 59983), (418, 51373), (451, 47614), (574, 37411), (779, 27566), (902, 23807), (1253, 17138), (1463, 14678), (1558, 13783), (1969, 10906), (2506, 8569), (2926, 7339), (3157, 6802), (3401, 6314), (3938, 5453)]