81567860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{9043}}^1$

素因数の和:9104

約数の個数: 48

約数和(自身を含む): 191443392

約数和(自身を除く): 109875532

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2255, 4510, 9020, 9043, 18086, 36172, 45215, 90430, 99473, 180860, 198946, 370763, 397892, 497365, 741526, 994730, 1483052, 1853815, 1989460, 3707630, 4078393, 7415260, 8156786, 16313572, 20391965, 40783930, 81567860]

約数ペア:

[(1, 81567860), (2, 40783930), (4, 20391965), (5, 16313572), (10, 8156786), (11, 7415260), (20, 4078393), (22, 3707630), (41, 1989460), (44, 1853815), (55, 1483052), (82, 994730), (110, 741526), (164, 497365), (205, 397892), (220, 370763), (410, 198946), (451, 180860), (820, 99473), (902, 90430), (1804, 45215), (2255, 36172), (4510, 18086), (9020, 9043)]