20805015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18013}}^1$

素因数の和:18039

約数の個数: 32

約数和(自身を含む): 41504256

約数和(自身を除く): 20699241

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 18013, 54039, 90065, 126091, 198143, 270195, 378273, 594429, 630455, 990715, 1387001, 1891365, 2972145, 4161003, 6935005, 20805015]

約数ペア:

[(1, 20805015), (3, 6935005), (5, 4161003), (7, 2972145), (11, 1891365), (15, 1387001), (21, 990715), (33, 630455), (35, 594429), (55, 378273), (77, 270195), (105, 198143), (165, 126091), (231, 90065), (385, 54039), (1155, 18013)]