12591920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{349}}^1$

素因数の和:414

約数の個数: 80

約数和(自身を含む): 32810400

約数和(自身を除く): 20218480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 41, 44, 55, 80, 82, 88, 110, 164, 176, 205, 220, 328, 349, 410, 440, 451, 656, 698, 820, 880, 902, 1396, 1640, 1745, 1804, 2255, 2792, 3280, 3490, 3608, 3839, 4510, 5584, 6980, 7216, 7678, 9020, 13960, 14309, 15356, 18040, 19195, 27920, 28618, 30712, 36080, 38390, 57236, 61424, 71545, 76780, 114472, 143090, 153560, 157399, 228944, 286180, 307120, 314798, 572360, 629596, 786995, 1144720, 1259192, 1573990, 2518384, 3147980, 6295960, 12591920]

約数ペア:

[(1, 12591920), (2, 6295960), (4, 3147980), (5, 2518384), (8, 1573990), (10, 1259192), (11, 1144720), (16, 786995), (20, 629596), (22, 572360), (40, 314798), (41, 307120), (44, 286180), (55, 228944), (80, 157399), (82, 153560), (88, 143090), (110, 114472), (164, 76780), (176, 71545), (205, 61424), (220, 57236), (328, 38390), (349, 36080), (410, 30712), (440, 28618), (451, 27920), (656, 19195), (698, 18040), (820, 15356), (880, 14309), (902, 13960), (1396, 9020), (1640, 7678), (1745, 7216), (1804, 6980), (2255, 5584), (2792, 4510), (3280, 3839), (3490, 3608)]