1620232720

素因数分解:

$2^4\times 5^1\times {\mathrm{1013}}^1\times {\mathrm{19993}}^1$

素因数の和:21019

約数の個数: 40

約数和(自身を含む): 3770948376

約数和(自身を除く): 2150715656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1013, 2026, 4052, 5065, 8104, 10130, 16208, 19993, 20260, 39986, 40520, 79972, 81040, 99965, 159944, 199930, 319888, 399860, 799720, 1599440, 20252909, 40505818, 81011636, 101264545, 162023272, 202529090, 324046544, 405058180, 810116360, 1620232720]

約数ペア:

[(1, 1620232720), (2, 810116360), (4, 405058180), (5, 324046544), (8, 202529090), (10, 162023272), (16, 101264545), (20, 81011636), (40, 40505818), (80, 20252909), (1013, 1599440), (2026, 799720), (4052, 399860), (5065, 319888), (8104, 199930), (10130, 159944), (16208, 99965), (19993, 81040), (20260, 79972), (39986, 40520)]