988956140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{47}}^1\times {\mathrm{569}}^1$

素因数の和:711

約数の個数: 72

約数和(自身を含む): 2175284160

約数和(自身を除く): 1186328020

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 470, 569, 860, 940, 1138, 1849, 2021, 2276, 2845, 3698, 4042, 5690, 7396, 8084, 9245, 10105, 11380, 18490, 20210, 24467, 26743, 36980, 40420, 48934, 53486, 86903, 97868, 106972, 122335, 133715, 173806, 244670, 267430, 347612, 434515, 489340, 534860, 869030, 1052081, 1149949, 1738060, 2104162, 2299898, 4208324, 4599796, 5260405, 5749745, 10520810, 11499490, 21041620, 22998980, 49447807, 98895614, 197791228, 247239035, 494478070, 988956140]

約数ペア:

[(1, 988956140), (2, 494478070), (4, 247239035), (5, 197791228), (10, 98895614), (20, 49447807), (43, 22998980), (47, 21041620), (86, 11499490), (94, 10520810), (172, 5749745), (188, 5260405), (215, 4599796), (235, 4208324), (430, 2299898), (470, 2104162), (569, 1738060), (860, 1149949), (940, 1052081), (1138, 869030), (1849, 534860), (2021, 489340), (2276, 434515), (2845, 347612), (3698, 267430), (4042, 244670), (5690, 173806), (7396, 133715), (8084, 122335), (9245, 106972), (10105, 97868), (11380, 86903), (18490, 53486), (20210, 48934), (24467, 40420), (26743, 36980)]