1999761760

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{158209}}^1$

素因数の和:158303

約数の個数: 48

約数和(自身を含む): 4784270400

約数和(自身を除く): 2784508640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 158, 160, 316, 395, 632, 790, 1264, 1580, 2528, 3160, 6320, 12640, 158209, 316418, 632836, 791045, 1265672, 1582090, 2531344, 3164180, 5062688, 6328360, 12498511, 12656720, 24997022, 25313440, 49994044, 62492555, 99988088, 124985110, 199976176, 249970220, 399952352, 499940440, 999880880, 1999761760]

約数ペア:

[(1, 1999761760), (2, 999880880), (4, 499940440), (5, 399952352), (8, 249970220), (10, 199976176), (16, 124985110), (20, 99988088), (32, 62492555), (40, 49994044), (79, 25313440), (80, 24997022), (158, 12656720), (160, 12498511), (316, 6328360), (395, 5062688), (632, 3164180), (790, 2531344), (1264, 1582090), (1580, 1265672), (2528, 791045), (3160, 632836), (6320, 316418), (12640, 158209)]