631638

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{557}}^1$

素因数の和:578

約数の個数: 40

約数和(自身を含む): 1620432

約数和(自身を除く): 988794

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 378, 557, 567, 1114, 1134, 1671, 3342, 3899, 5013, 7798, 10026, 11697, 15039, 23394, 30078, 35091, 45117, 70182, 90234, 105273, 210546, 315819, 631638]

約数ペア:

[(1, 631638), (2, 315819), (3, 210546), (6, 105273), (7, 90234), (9, 70182), (14, 45117), (18, 35091), (21, 30078), (27, 23394), (42, 15039), (54, 11697), (63, 10026), (81, 7798), (126, 5013), (162, 3899), (189, 3342), (378, 1671), (557, 1134), (567, 1114)]