21857208

素因数分解:

$2^3\times 3^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 56401920

約数和(自身を除く): 34544712

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 71, 101, 127, 142, 202, 213, 254, 284, 303, 381, 404, 426, 508, 568, 606, 762, 808, 852, 1016, 1212, 1524, 1704, 2424, 3048, 7171, 9017, 12827, 14342, 18034, 21513, 25654, 27051, 28684, 36068, 38481, 43026, 51308, 54102, 57368, 72136, 76962, 86052, 102616, 108204, 153924, 172104, 216408, 307848, 910717, 1821434, 2732151, 3642868, 5464302, 7285736, 10928604, 21857208]

約数ペア:

[(1, 21857208), (2, 10928604), (3, 7285736), (4, 5464302), (6, 3642868), (8, 2732151), (12, 1821434), (24, 910717), (71, 307848), (101, 216408), (127, 172104), (142, 153924), (202, 108204), (213, 102616), (254, 86052), (284, 76962), (303, 72136), (381, 57368), (404, 54102), (426, 51308), (508, 43026), (568, 38481), (606, 36068), (762, 28684), (808, 27051), (852, 25654), (1016, 21513), (1212, 18034), (1524, 14342), (1704, 12827), (2424, 9017), (3048, 7171)]