19565650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{971}}^1$

素因数の和:1027

約数の個数: 48

約数和(自身を含む): 40497408

約数和(自身を除く): 20931758

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 971, 1550, 1942, 2015, 4030, 4855, 9710, 10075, 12623, 20150, 24275, 25246, 30101, 48550, 60202, 63115, 126230, 150505, 301010, 315575, 391313, 631150, 752525, 782626, 1505050, 1956565, 3913130, 9782825, 19565650]

約数ペア:

[(1, 19565650), (2, 9782825), (5, 3913130), (10, 1956565), (13, 1505050), (25, 782626), (26, 752525), (31, 631150), (50, 391313), (62, 315575), (65, 301010), (130, 150505), (155, 126230), (310, 63115), (325, 60202), (403, 48550), (650, 30101), (775, 25246), (806, 24275), (971, 20150), (1550, 12623), (1942, 10075), (2015, 9710), (4030, 4855)]