20025500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^2\times {\mathrm{331}}^1$

素因数の和:372

約数の個数: 72

約数和(自身を含む): 48218352

約数和(自身を除く): 28192852

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 121, 125, 220, 242, 250, 275, 331, 484, 500, 550, 605, 662, 1100, 1210, 1324, 1375, 1655, 2420, 2750, 3025, 3310, 3641, 5500, 6050, 6620, 7282, 8275, 12100, 14564, 15125, 16550, 18205, 30250, 33100, 36410, 40051, 41375, 60500, 72820, 80102, 82750, 91025, 160204, 165500, 182050, 200255, 364100, 400510, 455125, 801020, 910250, 1001275, 1820500, 2002550, 4005100, 5006375, 10012750, 20025500]

約数ペア:

[(1, 20025500), (2, 10012750), (4, 5006375), (5, 4005100), (10, 2002550), (11, 1820500), (20, 1001275), (22, 910250), (25, 801020), (44, 455125), (50, 400510), (55, 364100), (100, 200255), (110, 182050), (121, 165500), (125, 160204), (220, 91025), (242, 82750), (250, 80102), (275, 72820), (331, 60500), (484, 41375), (500, 40051), (550, 36410), (605, 33100), (662, 30250), (1100, 18205), (1210, 16550), (1324, 15125), (1375, 14564), (1655, 12100), (2420, 8275), (2750, 7282), (3025, 6620), (3310, 6050), (3641, 5500)]