20574680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{373}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 53317440

約数和(自身を除く): 32742760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 197, 280, 373, 394, 746, 788, 985, 1379, 1492, 1576, 1865, 1970, 2611, 2758, 2984, 3730, 3940, 5222, 5516, 6895, 7460, 7880, 10444, 11032, 13055, 13790, 14920, 20888, 26110, 27580, 52220, 55160, 73481, 104440, 146962, 293924, 367405, 514367, 587848, 734810, 1028734, 1469620, 2057468, 2571835, 2939240, 4114936, 5143670, 10287340, 20574680]

約数ペア:

[(1, 20574680), (2, 10287340), (4, 5143670), (5, 4114936), (7, 2939240), (8, 2571835), (10, 2057468), (14, 1469620), (20, 1028734), (28, 734810), (35, 587848), (40, 514367), (56, 367405), (70, 293924), (140, 146962), (197, 104440), (280, 73481), (373, 55160), (394, 52220), (746, 27580), (788, 26110), (985, 20888), (1379, 14920), (1492, 13790), (1576, 13055), (1865, 11032), (1970, 10444), (2611, 7880), (2758, 7460), (2984, 6895), (3730, 5516), (3940, 5222)]