19981016

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{4831}}^1$

素因数の和:4895

約数の個数: 32

約数和(自身を含む): 41748480

約数和(自身を除く): 21767464

約数列:

[1, 2, 4, 8, 11, 22, 44, 47, 88, 94, 188, 376, 517, 1034, 2068, 4136, 4831, 9662, 19324, 38648, 53141, 106282, 212564, 227057, 425128, 454114, 908228, 1816456, 2497627, 4995254, 9990508, 19981016]

約数ペア:

[(1, 19981016), (2, 9990508), (4, 4995254), (8, 2497627), (11, 1816456), (22, 908228), (44, 454114), (47, 425128), (88, 227057), (94, 212564), (188, 106282), (376, 53141), (517, 38648), (1034, 19324), (2068, 9662), (4136, 4831)]