21286150

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^2\times {\mathrm{443}}^1$

素因数の和:517

約数の個数: 36

約数和(自身を含む): 41002956

約数和(自身を除く): 19716806

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 155, 310, 443, 775, 886, 961, 1550, 1922, 2215, 4430, 4805, 9610, 11075, 13733, 22150, 24025, 27466, 48050, 68665, 137330, 343325, 425723, 686650, 851446, 2128615, 4257230, 10643075, 21286150]

約数ペア:

[(1, 21286150), (2, 10643075), (5, 4257230), (10, 2128615), (25, 851446), (31, 686650), (50, 425723), (62, 343325), (155, 137330), (310, 68665), (443, 48050), (775, 27466), (886, 24025), (961, 22150), (1550, 13733), (1922, 11075), (2215, 9610), (4430, 4805)]