28278138

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{587}}^1$

素因数の和:667

約数の個数: 64

約数和(自身を含む): 68640768

約数和(自身を除く): 40362630

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 37, 42, 62, 74, 93, 111, 186, 217, 222, 259, 434, 518, 587, 651, 777, 1147, 1174, 1302, 1554, 1761, 2294, 3441, 3522, 4109, 6882, 8029, 8218, 12327, 16058, 18197, 21719, 24087, 24654, 36394, 43438, 48174, 54591, 65157, 109182, 127379, 130314, 152033, 254758, 304066, 382137, 456099, 673289, 764274, 912198, 1346578, 2019867, 4039734, 4713023, 9426046, 14139069, 28278138]

約数ペア:

[(1, 28278138), (2, 14139069), (3, 9426046), (6, 4713023), (7, 4039734), (14, 2019867), (21, 1346578), (31, 912198), (37, 764274), (42, 673289), (62, 456099), (74, 382137), (93, 304066), (111, 254758), (186, 152033), (217, 130314), (222, 127379), (259, 109182), (434, 65157), (518, 54591), (587, 48174), (651, 43438), (777, 36394), (1147, 24654), (1174, 24087), (1302, 21719), (1554, 18197), (1761, 16058), (2294, 12327), (3441, 8218), (3522, 8029), (4109, 6882)]