18919803

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{661}}^1$

素因数の和:747

約数の個数: 32

約数和(自身を含む): 30504960

約数和(自身を除く): 11585157

約数列:

[1, 3, 7, 21, 29, 47, 87, 141, 203, 329, 609, 661, 987, 1363, 1983, 4089, 4627, 9541, 13881, 19169, 28623, 31067, 57507, 93201, 134183, 217469, 402549, 652407, 900943, 2702829, 6306601, 18919803]

約数ペア:

[(1, 18919803), (3, 6306601), (7, 2702829), (21, 900943), (29, 652407), (47, 402549), (87, 217469), (141, 134183), (203, 93201), (329, 57507), (609, 31067), (661, 28623), (987, 19169), (1363, 13881), (1983, 9541), (4089, 4627)]