21676635

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{277}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 39551616

約数和(自身を除く): 17874981

約数列:

[1, 3, 5, 9, 15, 37, 45, 47, 111, 141, 185, 235, 277, 333, 423, 555, 705, 831, 1385, 1665, 1739, 2115, 2493, 4155, 5217, 8695, 10249, 12465, 13019, 15651, 26085, 30747, 39057, 51245, 65095, 78255, 92241, 117171, 153735, 195285, 461205, 481703, 585855, 1445109, 2408515, 4335327, 7225545, 21676635]

約数ペア:

[(1, 21676635), (3, 7225545), (5, 4335327), (9, 2408515), (15, 1445109), (37, 585855), (45, 481703), (47, 461205), (111, 195285), (141, 153735), (185, 117171), (235, 92241), (277, 78255), (333, 65095), (423, 51245), (555, 39057), (705, 30747), (831, 26085), (1385, 15651), (1665, 13019), (1739, 12465), (2115, 10249), (2493, 8695), (4155, 5217)]