21205750

素因数分解:

$2^1\times 5^3\times {\mathrm{271}}^1\times {\mathrm{313}}^1$

素因数の和:601

約数の個数: 32

約数和(自身を含む): 39970944

約数和(自身を除く): 18765194

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 271, 313, 542, 626, 1355, 1565, 2710, 3130, 6775, 7825, 13550, 15650, 33875, 39125, 67750, 78250, 84823, 169646, 424115, 848230, 2120575, 4241150, 10602875, 21205750]

約数ペア:

[(1, 21205750), (2, 10602875), (5, 4241150), (10, 2120575), (25, 848230), (50, 424115), (125, 169646), (250, 84823), (271, 78250), (313, 67750), (542, 39125), (626, 33875), (1355, 15650), (1565, 13550), (2710, 7825), (3130, 6775)]