21451976

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{373}}^1$

素因数の和:478

約数の個数: 64

約数和(自身を含む): 50265600

約数和(自身を除く): 28813624

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 79, 91, 104, 158, 182, 316, 364, 373, 553, 632, 728, 746, 1027, 1106, 1492, 2054, 2212, 2611, 2984, 4108, 4424, 4849, 5222, 7189, 8216, 9698, 10444, 14378, 19396, 20888, 28756, 29467, 33943, 38792, 57512, 58934, 67886, 117868, 135772, 206269, 235736, 271544, 383071, 412538, 766142, 825076, 1532284, 1650152, 2681497, 3064568, 5362994, 10725988, 21451976]

約数ペア:

[(1, 21451976), (2, 10725988), (4, 5362994), (7, 3064568), (8, 2681497), (13, 1650152), (14, 1532284), (26, 825076), (28, 766142), (52, 412538), (56, 383071), (79, 271544), (91, 235736), (104, 206269), (158, 135772), (182, 117868), (316, 67886), (364, 58934), (373, 57512), (553, 38792), (632, 33943), (728, 29467), (746, 28756), (1027, 20888), (1106, 19396), (1492, 14378), (2054, 10444), (2212, 9698), (2611, 8216), (2984, 7189), (4108, 5222), (4424, 4849)]