8001980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{937}}^1$

素因数の和:1014

約数の個数: 48

約数和(自身を含む): 19540416

約数和(自身を除く): 11538436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 937, 1220, 1708, 1874, 2135, 3748, 4270, 4685, 6559, 8540, 9370, 13118, 18740, 26236, 32795, 57157, 65590, 114314, 131180, 228628, 285785, 400099, 571570, 800198, 1143140, 1600396, 2000495, 4000990, 8001980]

約数ペア:

[(1, 8001980), (2, 4000990), (4, 2000495), (5, 1600396), (7, 1143140), (10, 800198), (14, 571570), (20, 400099), (28, 285785), (35, 228628), (61, 131180), (70, 114314), (122, 65590), (140, 57157), (244, 32795), (305, 26236), (427, 18740), (610, 13118), (854, 9370), (937, 8540), (1220, 6559), (1708, 4685), (1874, 4270), (2135, 3748)]