20015150

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{349}}^1$

素因数の和:429

約数の個数: 48

約数和(自身を含む): 39580800

約数和(自身を除く): 19565650

約数列:

[1, 2, 5, 10, 25, 31, 37, 50, 62, 74, 155, 185, 310, 349, 370, 698, 775, 925, 1147, 1550, 1745, 1850, 2294, 3490, 5735, 8725, 10819, 11470, 12913, 17450, 21638, 25826, 28675, 54095, 57350, 64565, 108190, 129130, 270475, 322825, 400303, 540950, 645650, 800606, 2001515, 4003030, 10007575, 20015150]

約数ペア:

[(1, 20015150), (2, 10007575), (5, 4003030), (10, 2001515), (25, 800606), (31, 645650), (37, 540950), (50, 400303), (62, 322825), (74, 270475), (155, 129130), (185, 108190), (310, 64565), (349, 57350), (370, 54095), (698, 28675), (775, 25826), (925, 21638), (1147, 17450), (1550, 12913), (1745, 11470), (1850, 10819), (2294, 8725), (3490, 5735)]