21977452

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{379}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 46816000

約数和(自身を除く): 24838548

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 109, 133, 218, 266, 379, 436, 532, 758, 763, 1516, 1526, 2071, 2653, 3052, 4142, 5306, 7201, 8284, 10612, 14402, 14497, 28804, 28994, 41311, 50407, 57988, 82622, 100814, 165244, 201628, 289177, 578354, 784909, 1156708, 1569818, 3139636, 5494363, 10988726, 21977452]

約数ペア:

[(1, 21977452), (2, 10988726), (4, 5494363), (7, 3139636), (14, 1569818), (19, 1156708), (28, 784909), (38, 578354), (76, 289177), (109, 201628), (133, 165244), (218, 100814), (266, 82622), (379, 57988), (436, 50407), (532, 41311), (758, 28994), (763, 28804), (1516, 14497), (1526, 14402), (2071, 10612), (2653, 8284), (3052, 7201), (4142, 5306)]