64509620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{2339}}^1$

素因数の和:2552

約数の個数: 48

約数和(自身を含む): 155675520

約数和(自身を除く): 91165900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 788, 985, 1379, 1970, 2339, 2758, 3940, 4678, 5516, 6895, 9356, 11695, 13790, 16373, 23390, 27580, 32746, 46780, 65492, 81865, 163730, 327460, 460783, 921566, 1843132, 2303915, 3225481, 4607830, 6450962, 9215660, 12901924, 16127405, 32254810, 64509620]

約数ペア:

[(1, 64509620), (2, 32254810), (4, 16127405), (5, 12901924), (7, 9215660), (10, 6450962), (14, 4607830), (20, 3225481), (28, 2303915), (35, 1843132), (70, 921566), (140, 460783), (197, 327460), (394, 163730), (788, 81865), (985, 65492), (1379, 46780), (1970, 32746), (2339, 27580), (2758, 23390), (3940, 16373), (4678, 13790), (5516, 11695), (6895, 9356)]