21421065

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{571}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 35747712

約数和(自身を除く): 14326647

約数列:

[1, 3, 5, 15, 41, 61, 123, 183, 205, 305, 571, 615, 915, 1713, 2501, 2855, 7503, 8565, 12505, 23411, 34831, 37515, 70233, 104493, 117055, 174155, 351165, 522465, 1428071, 4284213, 7140355, 21421065]

約数ペア:

[(1, 21421065), (3, 7140355), (5, 4284213), (15, 1428071), (41, 522465), (61, 351165), (123, 174155), (183, 117055), (205, 104493), (305, 70233), (571, 37515), (615, 34831), (915, 23411), (1713, 12505), (2501, 8565), (2855, 7503)]