989065480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1902049}}^1$

素因数の和:1902073

約数の個数: 32

約数和(自身を含む): 2396583000

約数和(自身を除く): 1407517520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1902049, 3804098, 7608196, 9510245, 15216392, 19020490, 24726637, 38040980, 49453274, 76081960, 98906548, 123633185, 197813096, 247266370, 494532740, 989065480]

約数ペア:

[(1, 989065480), (2, 494532740), (4, 247266370), (5, 197813096), (8, 123633185), (10, 98906548), (13, 76081960), (20, 49453274), (26, 38040980), (40, 24726637), (52, 19020490), (65, 15216392), (104, 9510245), (130, 7608196), (260, 3804098), (520, 1902049)]