644778

素因数分解:

$2^1\times 3^2\times {\mathrm{113}}^1\times {\mathrm{317}}^1$

素因数の和:438

約数の個数: 24

約数和(自身を含む): 1413828

約数和(自身を除く): 769050

約数列:

[1, 2, 3, 6, 9, 18, 113, 226, 317, 339, 634, 678, 951, 1017, 1902, 2034, 2853, 5706, 35821, 71642, 107463, 214926, 322389, 644778]

約数ペア:

[(1, 644778), (2, 322389), (3, 214926), (6, 107463), (9, 71642), (18, 35821), (113, 5706), (226, 2853), (317, 2034), (339, 1902), (634, 1017), (678, 951)]