664444820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{134503}}^1$

素因数の和:134544

約数の個数: 48

約数和(自身を含む): 1581767040

約数和(自身を除く): 917322220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 134503, 269006, 538012, 672515, 1345030, 1748539, 2555557, 2690060, 3497078, 5111114, 6994156, 8742695, 10222228, 12777785, 17485390, 25555570, 33222241, 34970780, 51111140, 66444482, 132888964, 166111205, 332222410, 664444820]

約数ペア:

[(1, 664444820), (2, 332222410), (4, 166111205), (5, 132888964), (10, 66444482), (13, 51111140), (19, 34970780), (20, 33222241), (26, 25555570), (38, 17485390), (52, 12777785), (65, 10222228), (76, 8742695), (95, 6994156), (130, 5111114), (190, 3497078), (247, 2690060), (260, 2555557), (380, 1748539), (494, 1345030), (988, 672515), (1235, 538012), (2470, 269006), (4940, 134503)]