20921784816

素因数分解:

$2^4\times 3^1\times {\mathrm{73}}^1\times {\mathrm{347}}^1\times {\mathrm{17207}}^1$

素因数の和:17638

約数の個数: 80

約数和(自身を含む): 54949411584

約数和(自身を除く): 34027626768

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 73, 146, 219, 292, 347, 438, 584, 694, 876, 1041, 1168, 1388, 1752, 2082, 2776, 3504, 4164, 5552, 8328, 16656, 17207, 25331, 34414, 50662, 51621, 68828, 75993, 101324, 103242, 137656, 151986, 202648, 206484, 275312, 303972, 405296, 412968, 607944, 825936, 1215888, 1256111, 2512222, 3768333, 5024444, 5970829, 7536666, 10048888, 11941658, 15073332, 17912487, 20097776, 23883316, 30146664, 35824974, 47766632, 60293328, 71649948, 95533264, 143299896, 286599792, 435870517, 871741034, 1307611551, 1743482068, 2615223102, 3486964136, 5230446204, 6973928272, 10460892408, 20921784816]

約数ペア:

[(1, 20921784816), (2, 10460892408), (3, 6973928272), (4, 5230446204), (6, 3486964136), (8, 2615223102), (12, 1743482068), (16, 1307611551), (24, 871741034), (48, 435870517), (73, 286599792), (146, 143299896), (219, 95533264), (292, 71649948), (347, 60293328), (438, 47766632), (584, 35824974), (694, 30146664), (876, 23883316), (1041, 20097776), (1168, 17912487), (1388, 15073332), (1752, 11941658), (2082, 10048888), (2776, 7536666), (3504, 5970829), (4164, 5024444), (5552, 3768333), (8328, 2512222), (16656, 1256111), (17207, 1215888), (25331, 825936), (34414, 607944), (50662, 412968), (51621, 405296), (68828, 303972), (75993, 275312), (101324, 206484), (103242, 202648), (137656, 151986)]