21124857

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{173}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 31804416

約数和(自身を除く): 10679559

約数列:

[1, 3, 13, 31, 39, 93, 101, 173, 303, 403, 519, 1209, 1313, 2249, 3131, 3939, 5363, 6747, 9393, 16089, 17473, 40703, 52419, 69719, 122109, 209157, 227149, 541663, 681447, 1624989, 7041619, 21124857]

約数ペア:

[(1, 21124857), (3, 7041619), (13, 1624989), (31, 681447), (39, 541663), (93, 227149), (101, 209157), (173, 122109), (303, 69719), (403, 52419), (519, 40703), (1209, 17473), (1313, 16089), (2249, 9393), (3131, 6747), (3939, 5363)]