21266415

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8291}}^1$

素因数の和:8324

約数の個数: 32

約数和(自身を含む): 39801600

約数和(自身を除く): 18535185

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 8291, 24873, 41455, 74619, 124365, 157529, 223857, 373095, 472587, 787645, 1119285, 1417761, 2362935, 4253283, 7088805, 21266415]

約数ペア:

[(1, 21266415), (3, 7088805), (5, 4253283), (9, 2362935), (15, 1417761), (19, 1119285), (27, 787645), (45, 472587), (57, 373095), (95, 223857), (135, 157529), (171, 124365), (285, 74619), (513, 41455), (855, 24873), (2565, 8291)]