20921342

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:404

約数の個数: 32

約数和(自身を含む): 35368704

約数和(自身を除く): 14447362

約数列:

[1, 2, 13, 26, 31, 62, 101, 202, 257, 403, 514, 806, 1313, 2626, 3131, 3341, 6262, 6682, 7967, 15934, 25957, 40703, 51914, 81406, 103571, 207142, 337441, 674882, 804667, 1609334, 10460671, 20921342]

約数ペア:

[(1, 20921342), (2, 10460671), (13, 1609334), (26, 804667), (31, 674882), (62, 337441), (101, 207142), (202, 103571), (257, 81406), (403, 51914), (514, 40703), (806, 25957), (1313, 15934), (2626, 7967), (3131, 6682), (3341, 6262)]