645428

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:144

約数の個数: 36

約数和(自身を含む): 1364580

約数和(自身を除く): 719152

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 74, 89, 98, 148, 178, 196, 259, 356, 518, 623, 1036, 1246, 1813, 2492, 3293, 3626, 4361, 6586, 7252, 8722, 13172, 17444, 23051, 46102, 92204, 161357, 322714, 645428]

約数ペア:

[(1, 645428), (2, 322714), (4, 161357), (7, 92204), (14, 46102), (28, 23051), (37, 17444), (49, 13172), (74, 8722), (89, 7252), (98, 6586), (148, 4361), (178, 3626), (196, 3293), (259, 2492), (356, 1813), (518, 1246), (623, 1036)]