21511272

素因数分解:

$2^3\times 3^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{997}}^1$

素因数の和:1066

約数の個数: 64

約数和(自身を含む): 57484800

約数和(自身を除く): 35973528

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 29, 31, 58, 62, 87, 93, 116, 124, 174, 186, 232, 248, 348, 372, 696, 744, 899, 997, 1798, 1994, 2697, 2991, 3596, 3988, 5394, 5982, 7192, 7976, 10788, 11964, 21576, 23928, 28913, 30907, 57826, 61814, 86739, 92721, 115652, 123628, 173478, 185442, 231304, 247256, 346956, 370884, 693912, 741768, 896303, 1792606, 2688909, 3585212, 5377818, 7170424, 10755636, 21511272]

約数ペア:

[(1, 21511272), (2, 10755636), (3, 7170424), (4, 5377818), (6, 3585212), (8, 2688909), (12, 1792606), (24, 896303), (29, 741768), (31, 693912), (58, 370884), (62, 346956), (87, 247256), (93, 231304), (116, 185442), (124, 173478), (174, 123628), (186, 115652), (232, 92721), (248, 86739), (348, 61814), (372, 57826), (696, 30907), (744, 28913), (899, 23928), (997, 21576), (1798, 11964), (1994, 10788), (2697, 7976), (2991, 7192), (3596, 5982), (3988, 5394)]