51156920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{18013}}^1$

素因数の和:18095

約数の個数: 32

約数和(自身を含む): 116730720

約数和(自身を除く): 65573800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 18013, 36026, 72052, 90065, 144104, 180130, 360260, 720520, 1278923, 2557846, 5115692, 6394615, 10231384, 12789230, 25578460, 51156920]

約数ペア:

[(1, 51156920), (2, 25578460), (4, 12789230), (5, 10231384), (8, 6394615), (10, 5115692), (20, 2557846), (40, 1278923), (71, 720520), (142, 360260), (284, 180130), (355, 144104), (568, 90065), (710, 72052), (1420, 36026), (2840, 18013)]