21651609

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 34570240

約数和(自身を除く): 12918631

約数列:

[1, 3, 7, 21, 31, 79, 93, 217, 237, 421, 553, 651, 1263, 1659, 2449, 2947, 7347, 8841, 13051, 17143, 33259, 39153, 51429, 91357, 99777, 232813, 274071, 698439, 1031029, 3093087, 7217203, 21651609]

約数ペア:

[(1, 21651609), (3, 7217203), (7, 3093087), (21, 1031029), (31, 698439), (79, 274071), (93, 232813), (217, 99777), (237, 91357), (421, 51429), (553, 39153), (651, 33259), (1263, 17143), (1659, 13051), (2449, 8841), (2947, 7347)]