641796616

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{32077}}^1$

素因数の和:32185

約数の個数: 32

約数和(自身を含む): 1252966680

約数和(自身を除く): 611170064

約数列:

[1, 2, 4, 8, 41, 61, 82, 122, 164, 244, 328, 488, 2501, 5002, 10004, 20008, 32077, 64154, 128308, 256616, 1315157, 1956697, 2630314, 3913394, 5260628, 7826788, 10521256, 15653576, 80224577, 160449154, 320898308, 641796616]

約数ペア:

[(1, 641796616), (2, 320898308), (4, 160449154), (8, 80224577), (41, 15653576), (61, 10521256), (82, 7826788), (122, 5260628), (164, 3913394), (244, 2630314), (328, 1956697), (488, 1315157), (2501, 256616), (5002, 128308), (10004, 64154), (20008, 32077)]