20189480

素因数分解:

$2^3\times 5^1\times {\mathrm{683}}^1\times {\mathrm{739}}^1$

素因数の和:1433

約数の個数: 32

約数和(自身を含む): 45554400

約数和(自身を除く): 25364920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 683, 739, 1366, 1478, 2732, 2956, 3415, 3695, 5464, 5912, 6830, 7390, 13660, 14780, 27320, 29560, 504737, 1009474, 2018948, 2523685, 4037896, 5047370, 10094740, 20189480]

約数ペア:

[(1, 20189480), (2, 10094740), (4, 5047370), (5, 4037896), (8, 2523685), (10, 2018948), (20, 1009474), (40, 504737), (683, 29560), (739, 27320), (1366, 14780), (1478, 13660), (2732, 7390), (2956, 6830), (3415, 5912), (3695, 5464)]