21001422

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{383}}^1$

素因数の和:457

約数の個数: 64

約数和(自身を含む): 49029120

約数和(自身を除く): 28027698

約数列:

[1, 2, 3, 6, 13, 19, 26, 37, 38, 39, 57, 74, 78, 111, 114, 222, 247, 383, 481, 494, 703, 741, 766, 962, 1149, 1406, 1443, 1482, 2109, 2298, 2886, 4218, 4979, 7277, 9139, 9958, 14171, 14554, 14937, 18278, 21831, 27417, 28342, 29874, 42513, 43662, 54834, 85026, 94601, 184223, 189202, 269249, 283803, 368446, 538498, 552669, 567606, 807747, 1105338, 1615494, 3500237, 7000474, 10500711, 21001422]

約数ペア:

[(1, 21001422), (2, 10500711), (3, 7000474), (6, 3500237), (13, 1615494), (19, 1105338), (26, 807747), (37, 567606), (38, 552669), (39, 538498), (57, 368446), (74, 283803), (78, 269249), (111, 189202), (114, 184223), (222, 94601), (247, 85026), (383, 54834), (481, 43662), (494, 42513), (703, 29874), (741, 28342), (766, 27417), (962, 21831), (1149, 18278), (1406, 14937), (1443, 14554), (1482, 14171), (2109, 9958), (2298, 9139), (2886, 7277), (4218, 4979)]