20805900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{223}}^1\times {\mathrm{311}}^1$

素因数の和:551

約数の個数: 72

約数和(自身を含む): 60662784

約数和(自身を除く): 39856884

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 223, 300, 311, 446, 622, 669, 892, 933, 1115, 1244, 1338, 1555, 1866, 2230, 2676, 3110, 3345, 3732, 4460, 4665, 5575, 6220, 6690, 7775, 9330, 11150, 13380, 15550, 16725, 18660, 22300, 23325, 31100, 33450, 46650, 66900, 69353, 93300, 138706, 208059, 277412, 346765, 416118, 693530, 832236, 1040295, 1387060, 1733825, 2080590, 3467650, 4161180, 5201475, 6935300, 10402950, 20805900]

約数ペア:

[(1, 20805900), (2, 10402950), (3, 6935300), (4, 5201475), (5, 4161180), (6, 3467650), (10, 2080590), (12, 1733825), (15, 1387060), (20, 1040295), (25, 832236), (30, 693530), (50, 416118), (60, 346765), (75, 277412), (100, 208059), (150, 138706), (223, 93300), (300, 69353), (311, 66900), (446, 46650), (622, 33450), (669, 31100), (892, 23325), (933, 22300), (1115, 18660), (1244, 16725), (1338, 15550), (1555, 13380), (1866, 11150), (2230, 9330), (2676, 7775), (3110, 6690), (3345, 6220), (3732, 5575), (4460, 4665)]