21681052

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 42971040

約数和(自身を除く): 21289988

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 97, 173, 194, 323, 346, 388, 646, 692, 1292, 1649, 1843, 2941, 3287, 3298, 3686, 5882, 6574, 6596, 7372, 11764, 13148, 16781, 31331, 33562, 55879, 62662, 67124, 111758, 125324, 223516, 285277, 318839, 570554, 637678, 1141108, 1275356, 5420263, 10840526, 21681052]

約数ペア:

[(1, 21681052), (2, 10840526), (4, 5420263), (17, 1275356), (19, 1141108), (34, 637678), (38, 570554), (68, 318839), (76, 285277), (97, 223516), (173, 125324), (194, 111758), (323, 67124), (346, 62662), (388, 55879), (646, 33562), (692, 31331), (1292, 16781), (1649, 13148), (1843, 11764), (2941, 7372), (3287, 6596), (3298, 6574), (3686, 5882)]