21960015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19013}}^1$

素因数の和:19039

約数の個数: 32

約数和(自身を含む): 43808256

約数和(自身を除く): 21848241

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 19013, 57039, 95065, 133091, 209143, 285195, 399273, 627429, 665455, 1045715, 1464001, 1996365, 3137145, 4392003, 7320005, 21960015]

約数ペア:

[(1, 21960015), (3, 7320005), (5, 4392003), (7, 3137145), (11, 1996365), (15, 1464001), (21, 1045715), (33, 665455), (35, 627429), (55, 399273), (77, 285195), (105, 209143), (165, 133091), (231, 95065), (385, 57039), (1155, 19013)]