20321964

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{251}}^1$

素因数の和:447

約数の個数: 72

約数和(自身を含む): 55862352

約数和(自身を除く): 35540388

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 173, 234, 251, 346, 468, 502, 519, 692, 753, 1004, 1038, 1506, 1557, 2076, 2249, 2259, 3012, 3114, 3263, 4498, 4518, 6228, 6526, 6747, 8996, 9036, 9789, 13052, 13494, 19578, 20241, 26988, 29367, 39156, 40482, 43423, 58734, 80964, 86846, 117468, 130269, 173692, 260538, 390807, 521076, 564499, 781614, 1128998, 1563228, 1693497, 2257996, 3386994, 5080491, 6773988, 10160982, 20321964]

約数ペア:

[(1, 20321964), (2, 10160982), (3, 6773988), (4, 5080491), (6, 3386994), (9, 2257996), (12, 1693497), (13, 1563228), (18, 1128998), (26, 781614), (36, 564499), (39, 521076), (52, 390807), (78, 260538), (117, 173692), (156, 130269), (173, 117468), (234, 86846), (251, 80964), (346, 58734), (468, 43423), (502, 40482), (519, 39156), (692, 29367), (753, 26988), (1004, 20241), (1038, 19578), (1506, 13494), (1557, 13052), (2076, 9789), (2249, 9036), (2259, 8996), (3012, 6747), (3114, 6526), (3263, 6228), (4498, 4518)]