21000765604

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{571}}^1\times {\mathrm{1279}}^1$

素因数の和:1953

約数の個数: 96

約数和(自身を含む): 45921075200

約数和(自身を除く): 24920309596

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 79, 91, 158, 182, 316, 364, 553, 571, 1027, 1106, 1142, 1279, 2054, 2212, 2284, 2558, 3997, 4108, 5116, 7189, 7423, 7994, 8953, 14378, 14846, 15988, 16627, 17906, 28756, 29692, 33254, 35812, 45109, 51961, 66508, 90218, 101041, 103922, 116389, 180436, 202082, 207844, 232778, 315763, 404164, 465556, 586417, 631526, 707287, 730309, 1172834, 1263052, 1313533, 1414574, 1460618, 2345668, 2627066, 2829148, 2921236, 4104919, 5112163, 5254132, 8209838, 9194731, 9494017, 10224326, 16419676, 18389462, 18988034, 20448652, 36778924, 37976068, 57694411, 66458119, 115388822, 132916238, 230777644, 265832476, 403860877, 750027343, 807721754, 1500054686, 1615443508, 3000109372, 5250191401, 10500382802, 21000765604]

約数ペア:

[(1, 21000765604), (2, 10500382802), (4, 5250191401), (7, 3000109372), (13, 1615443508), (14, 1500054686), (26, 807721754), (28, 750027343), (52, 403860877), (79, 265832476), (91, 230777644), (158, 132916238), (182, 115388822), (316, 66458119), (364, 57694411), (553, 37976068), (571, 36778924), (1027, 20448652), (1106, 18988034), (1142, 18389462), (1279, 16419676), (2054, 10224326), (2212, 9494017), (2284, 9194731), (2558, 8209838), (3997, 5254132), (4108, 5112163), (5116, 4104919), (7189, 2921236), (7423, 2829148), (7994, 2627066), (8953, 2345668), (14378, 1460618), (14846, 1414574), (15988, 1313533), (16627, 1263052), (17906, 1172834), (28756, 730309), (29692, 707287), (33254, 631526), (35812, 586417), (45109, 465556), (51961, 404164), (66508, 315763), (90218, 232778), (101041, 207844), (103922, 202082), (116389, 180436)]