21265455

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{1163}}^1$

素因数の和:1247

約数の個数: 32

約数和(自身を含む): 36205056

約数和(自身を除く): 14939601

約数列:

[1, 3, 5, 15, 23, 53, 69, 115, 159, 265, 345, 795, 1163, 1219, 3489, 3657, 5815, 6095, 17445, 18285, 26749, 61639, 80247, 133745, 184917, 308195, 401235, 924585, 1417697, 4253091, 7088485, 21265455]

約数ペア:

[(1, 21265455), (3, 7088485), (5, 4253091), (15, 1417697), (23, 924585), (53, 401235), (69, 308195), (115, 184917), (159, 133745), (265, 80247), (345, 61639), (795, 26749), (1163, 18285), (1219, 17445), (3489, 6095), (3657, 5815)]