19815780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1481}}^1$

素因数の和:1716

約数の個数: 48

約数和(自身を含む): 55770624

約数和(自身を除く): 35954844

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 223, 446, 669, 892, 1115, 1338, 1481, 2230, 2676, 2962, 3345, 4443, 4460, 5924, 6690, 7405, 8886, 13380, 14810, 17772, 22215, 29620, 44430, 88860, 330263, 660526, 990789, 1321052, 1651315, 1981578, 3302630, 3963156, 4953945, 6605260, 9907890, 19815780]

約数ペア:

[(1, 19815780), (2, 9907890), (3, 6605260), (4, 4953945), (5, 3963156), (6, 3302630), (10, 1981578), (12, 1651315), (15, 1321052), (20, 990789), (30, 660526), (60, 330263), (223, 88860), (446, 44430), (669, 29620), (892, 22215), (1115, 17772), (1338, 14810), (1481, 13380), (2230, 8886), (2676, 7405), (2962, 6690), (3345, 5924), (4443, 4460)]