72671120

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{2221}}^1$

素因数の和:2643

約数の個数: 40

約数和(自身を含む): 169449720

約数和(自身を除く): 96778600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 2045, 2221, 3272, 4090, 4442, 6544, 8180, 8884, 11105, 16360, 17768, 22210, 32720, 35536, 44420, 88840, 177680, 908389, 1816778, 3633556, 4541945, 7267112, 9083890, 14534224, 18167780, 36335560, 72671120]

約数ペア:

[(1, 72671120), (2, 36335560), (4, 18167780), (5, 14534224), (8, 9083890), (10, 7267112), (16, 4541945), (20, 3633556), (40, 1816778), (80, 908389), (409, 177680), (818, 88840), (1636, 44420), (2045, 35536), (2221, 32720), (3272, 22210), (4090, 17768), (4442, 16360), (6544, 11105), (8180, 8884)]