989702960

素因数分解:

$2^4\times 5^1\times {\mathrm{647}}^1\times {\mathrm{19121}}^1$

素因数の和:19781

約数の個数: 40

約数和(自身を含む): 2304736416

約数和(自身を除く): 1315033456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 647, 1294, 2588, 3235, 5176, 6470, 10352, 12940, 19121, 25880, 38242, 51760, 76484, 95605, 152968, 191210, 305936, 382420, 764840, 1529680, 12371287, 24742574, 49485148, 61856435, 98970296, 123712870, 197940592, 247425740, 494851480, 989702960]

約数ペア:

[(1, 989702960), (2, 494851480), (4, 247425740), (5, 197940592), (8, 123712870), (10, 98970296), (16, 61856435), (20, 49485148), (40, 24742574), (80, 12371287), (647, 1529680), (1294, 764840), (2588, 382420), (3235, 305936), (5176, 191210), (6470, 152968), (10352, 95605), (12940, 76484), (19121, 51760), (25880, 38242)]