21731590

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{313}}^1$

素因数の和:504

約数の個数: 32

約数和(自身を含む): 40287456

約数和(自身を除く): 18555866

約数列:

[1, 2, 5, 10, 53, 106, 131, 262, 265, 313, 530, 626, 655, 1310, 1565, 3130, 6943, 13886, 16589, 33178, 34715, 41003, 69430, 82006, 82945, 165890, 205015, 410030, 2173159, 4346318, 10865795, 21731590]

約数ペア:

[(1, 21731590), (2, 10865795), (5, 4346318), (10, 2173159), (53, 410030), (106, 205015), (131, 165890), (262, 82945), (265, 82006), (313, 69430), (530, 41003), (626, 34715), (655, 33178), (1310, 16589), (1565, 13886), (3130, 6943)]