19724901

素因数分解:

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

素因数の和:714

約数の個数: 32

約数和(自身を含む): 31776000

約数和(自身を除く): 12051099

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 343, 609, 661, 1029, 1421, 1983, 4263, 4627, 9947, 13881, 19169, 29841, 32389, 57507, 97167, 134183, 226723, 402549, 680169, 939281, 2817843, 6574967, 19724901]

約数ペア:

[(1, 19724901), (3, 6574967), (7, 2817843), (21, 939281), (29, 680169), (49, 402549), (87, 226723), (147, 134183), (203, 97167), (343, 57507), (609, 32389), (661, 29841), (1029, 19169), (1421, 13881), (1983, 9947), (4263, 4627)]