19918878

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:369

約数の個数: 64

約数和(自身を含む): 48576000

約数和(自身を除く): 28657122

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 109, 114, 133, 218, 229, 266, 327, 399, 458, 654, 687, 763, 798, 1374, 1526, 1603, 2071, 2289, 3206, 4142, 4351, 4578, 4809, 6213, 8702, 9618, 12426, 13053, 14497, 24961, 26106, 28994, 30457, 43491, 49922, 60914, 74883, 86982, 91371, 149766, 174727, 182742, 349454, 474259, 524181, 948518, 1048362, 1422777, 2845554, 3319813, 6639626, 9959439, 19918878]

約数ペア:

[(1, 19918878), (2, 9959439), (3, 6639626), (6, 3319813), (7, 2845554), (14, 1422777), (19, 1048362), (21, 948518), (38, 524181), (42, 474259), (57, 349454), (109, 182742), (114, 174727), (133, 149766), (218, 91371), (229, 86982), (266, 74883), (327, 60914), (399, 49922), (458, 43491), (654, 30457), (687, 28994), (763, 26106), (798, 24961), (1374, 14497), (1526, 13053), (1603, 12426), (2071, 9618), (2289, 8702), (3206, 6213), (4142, 4809), (4351, 4578)]