7499980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{193}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 16621920

約数和(自身を除く): 9121940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 67, 116, 134, 145, 193, 268, 290, 335, 386, 580, 670, 772, 965, 1340, 1930, 1943, 3860, 3886, 5597, 7772, 9715, 11194, 12931, 19430, 22388, 25862, 27985, 38860, 51724, 55970, 64655, 111940, 129310, 258620, 374999, 749998, 1499996, 1874995, 3749990, 7499980]

約数ペア:

[(1, 7499980), (2, 3749990), (4, 1874995), (5, 1499996), (10, 749998), (20, 374999), (29, 258620), (58, 129310), (67, 111940), (116, 64655), (134, 55970), (145, 51724), (193, 38860), (268, 27985), (290, 25862), (335, 22388), (386, 19430), (580, 12931), (670, 11194), (772, 9715), (965, 7772), (1340, 5597), (1930, 3886), (1943, 3860)]