18745792312

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{729749}}^1$

素因数の和:729800

約数の個数: 48

約数和(自身を含む): 40063275000

約数和(自身を除く): 21317482688

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 169, 247, 338, 494, 676, 988, 1352, 1976, 3211, 6422, 12844, 25688, 729749, 1459498, 2918996, 5837992, 9486737, 13865231, 18973474, 27730462, 37946948, 55460924, 75893896, 110921848, 123327581, 180248003, 246655162, 360496006, 493310324, 720992012, 986620648, 1441984024, 2343224039, 4686448078, 9372896156, 18745792312]

約数ペア:

[(1, 18745792312), (2, 9372896156), (4, 4686448078), (8, 2343224039), (13, 1441984024), (19, 986620648), (26, 720992012), (38, 493310324), (52, 360496006), (76, 246655162), (104, 180248003), (152, 123327581), (169, 110921848), (247, 75893896), (338, 55460924), (494, 37946948), (676, 27730462), (988, 18973474), (1352, 13865231), (1976, 9486737), (3211, 5837992), (6422, 2918996), (12844, 1459498), (25688, 729749)]