19704525

素因数分解:

$3^1\times 5^2\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 34134720

約数和(自身を除く): 14430195

約数列:

[1, 3, 5, 15, 25, 59, 61, 73, 75, 177, 183, 219, 295, 305, 365, 885, 915, 1095, 1475, 1525, 1825, 3599, 4307, 4425, 4453, 4575, 5475, 10797, 12921, 13359, 17995, 21535, 22265, 53985, 64605, 66795, 89975, 107675, 111325, 262727, 269925, 323025, 333975, 788181, 1313635, 3940905, 6568175, 19704525]

約数ペア:

[(1, 19704525), (3, 6568175), (5, 3940905), (15, 1313635), (25, 788181), (59, 333975), (61, 323025), (73, 269925), (75, 262727), (177, 111325), (183, 107675), (219, 89975), (295, 66795), (305, 64605), (365, 53985), (885, 22265), (915, 21535), (1095, 17995), (1475, 13359), (1525, 12921), (1825, 10797), (3599, 5475), (4307, 4575), (4425, 4453)]