20642600

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^2\times {\mathrm{853}}^1$

素因数の和:891

約数の個数: 72

約数和(自身を含む): 52815630

約数和(自身を除く): 32173030

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 121, 200, 220, 242, 275, 440, 484, 550, 605, 853, 968, 1100, 1210, 1706, 2200, 2420, 3025, 3412, 4265, 4840, 6050, 6824, 8530, 9383, 12100, 17060, 18766, 21325, 24200, 34120, 37532, 42650, 46915, 75064, 85300, 93830, 103213, 170600, 187660, 206426, 234575, 375320, 412852, 469150, 516065, 825704, 938300, 1032130, 1876600, 2064260, 2580325, 4128520, 5160650, 10321300, 20642600]

約数ペア:

[(1, 20642600), (2, 10321300), (4, 5160650), (5, 4128520), (8, 2580325), (10, 2064260), (11, 1876600), (20, 1032130), (22, 938300), (25, 825704), (40, 516065), (44, 469150), (50, 412852), (55, 375320), (88, 234575), (100, 206426), (110, 187660), (121, 170600), (200, 103213), (220, 93830), (242, 85300), (275, 75064), (440, 46915), (484, 42650), (550, 37532), (605, 34120), (853, 24200), (968, 21325), (1100, 18766), (1210, 17060), (1706, 12100), (2200, 9383), (2420, 8530), (3025, 6824), (3412, 6050), (4265, 4840)]