20457045

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{643}}^1$

素因数の和:762

約数の個数: 48

約数和(自身を含む): 40989312

約数和(自身を除く): 20532267

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 101, 105, 303, 315, 505, 643, 707, 909, 1515, 1929, 2121, 3215, 3535, 4501, 4545, 5787, 6363, 9645, 10605, 13503, 22505, 28935, 31815, 40509, 64943, 67515, 194829, 202545, 324715, 454601, 584487, 974145, 1363803, 2273005, 2922435, 4091409, 6819015, 20457045]

約数ペア:

[(1, 20457045), (3, 6819015), (5, 4091409), (7, 2922435), (9, 2273005), (15, 1363803), (21, 974145), (35, 584487), (45, 454601), (63, 324715), (101, 202545), (105, 194829), (303, 67515), (315, 64943), (505, 40509), (643, 31815), (707, 28935), (909, 22505), (1515, 13503), (1929, 10605), (2121, 9645), (3215, 6363), (3535, 5787), (4501, 4545)]