18003980

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{3931}}^1$

素因数の和:4169

約数の個数: 24

約数和(自身を含む): 37983120

約数和(自身を除く): 19979140

約数列:

[1, 2, 4, 5, 10, 20, 229, 458, 916, 1145, 2290, 3931, 4580, 7862, 15724, 19655, 39310, 78620, 900199, 1800398, 3600796, 4500995, 9001990, 18003980]

約数ペア:

[(1, 18003980), (2, 9001990), (4, 4500995), (5, 3600796), (10, 1800398), (20, 900199), (229, 78620), (458, 39310), (916, 19655), (1145, 15724), (2290, 7862), (3931, 4580)]