21409995

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1123}}^1$

素因数の和:1203

約数の個数: 32

約数和(自身を含む): 36255744

約数和(自身を除く): 14845749

約数列:

[1, 3, 5, 15, 31, 41, 93, 123, 155, 205, 465, 615, 1123, 1271, 3369, 3813, 5615, 6355, 16845, 19065, 34813, 46043, 104439, 138129, 174065, 230215, 522195, 690645, 1427333, 4281999, 7136665, 21409995]

約数ペア:

[(1, 21409995), (3, 7136665), (5, 4281999), (15, 1427333), (31, 690645), (41, 522195), (93, 230215), (123, 174065), (155, 138129), (205, 104439), (465, 46043), (615, 34813), (1123, 19065), (1271, 16845), (3369, 6355), (3813, 5615)]