20203520

素因数分解:

$2^{11}\times 5^1\times {\mathrm{1973}}^1$

素因数の和:2000

約数の個数: 48

約数和(自身を含む): 48501180

約数和(自身を除く): 28297660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 1973, 2048, 2560, 3946, 5120, 7892, 9865, 10240, 15784, 19730, 31568, 39460, 63136, 78920, 126272, 157840, 252544, 315680, 505088, 631360, 1010176, 1262720, 2020352, 2525440, 4040704, 5050880, 10101760, 20203520]

約数ペア:

[(1, 20203520), (2, 10101760), (4, 5050880), (5, 4040704), (8, 2525440), (10, 2020352), (16, 1262720), (20, 1010176), (32, 631360), (40, 505088), (64, 315680), (80, 252544), (128, 157840), (160, 126272), (256, 78920), (320, 63136), (512, 39460), (640, 31568), (1024, 19730), (1280, 15784), (1973, 10240), (2048, 9865), (2560, 7892), (3946, 5120)]