81342040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8233}}^1$

素因数の和:8276

約数の個数: 64

約数和(自身を含む): 207496800

約数和(自身を除く): 126154760

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 4940, 8233, 9880, 16466, 32932, 41165, 65864, 82330, 107029, 156427, 164660, 214058, 312854, 329320, 428116, 535145, 625708, 782135, 856232, 1070290, 1251416, 1564270, 2033551, 2140580, 3128540, 4067102, 4281160, 6257080, 8134204, 10167755, 16268408, 20335510, 40671020, 81342040]

約数ペア:

[(1, 81342040), (2, 40671020), (4, 20335510), (5, 16268408), (8, 10167755), (10, 8134204), (13, 6257080), (19, 4281160), (20, 4067102), (26, 3128540), (38, 2140580), (40, 2033551), (52, 1564270), (65, 1251416), (76, 1070290), (95, 856232), (104, 782135), (130, 625708), (152, 535145), (190, 428116), (247, 329320), (260, 312854), (380, 214058), (494, 164660), (520, 156427), (760, 107029), (988, 82330), (1235, 65864), (1976, 41165), (2470, 32932), (4940, 16466), (8233, 9880)]