19981020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{14479}}^1$

素因数の和:14514

約数の個数: 48

約数和(自身を含む): 58383360

約数和(自身を除く): 38402340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 14479, 28958, 43437, 57916, 72395, 86874, 144790, 173748, 217185, 289580, 333017, 434370, 666034, 868740, 999051, 1332068, 1665085, 1998102, 3330170, 3996204, 4995255, 6660340, 9990510, 19981020]

約数ペア:

[(1, 19981020), (2, 9990510), (3, 6660340), (4, 4995255), (5, 3996204), (6, 3330170), (10, 1998102), (12, 1665085), (15, 1332068), (20, 999051), (23, 868740), (30, 666034), (46, 434370), (60, 333017), (69, 289580), (92, 217185), (115, 173748), (138, 144790), (230, 86874), (276, 72395), (345, 57916), (460, 43437), (690, 28958), (1380, 14479)]