20853760

素因数分解:

$2^{10}\times 5^1\times {\mathrm{4073}}^1$

素因数の和:4098

約数の個数: 44

約数和(自身を含む): 50036868

約数和(自身を除く): 29183108

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 4073, 5120, 8146, 16292, 20365, 32584, 40730, 65168, 81460, 130336, 162920, 260672, 325840, 521344, 651680, 1042688, 1303360, 2085376, 2606720, 4170752, 5213440, 10426880, 20853760]

約数ペア:

[(1, 20853760), (2, 10426880), (4, 5213440), (5, 4170752), (8, 2606720), (10, 2085376), (16, 1303360), (20, 1042688), (32, 651680), (40, 521344), (64, 325840), (80, 260672), (128, 162920), (160, 130336), (256, 81460), (320, 65168), (512, 40730), (640, 32584), (1024, 20365), (1280, 16292), (2560, 8146), (4073, 5120)]