19920990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{28871}}^1$

素因数の和:28904

約数の個数: 32

約数和(自身を含む): 49890816

約数和(自身を除く): 29969826

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690, 28871, 57742, 86613, 144355, 173226, 288710, 433065, 664033, 866130, 1328066, 1992099, 3320165, 3984198, 6640330, 9960495, 19920990]

約数ペア:

[(1, 19920990), (2, 9960495), (3, 6640330), (5, 3984198), (6, 3320165), (10, 1992099), (15, 1328066), (23, 866130), (30, 664033), (46, 433065), (69, 288710), (115, 173226), (138, 144355), (230, 86613), (345, 57742), (690, 28871)]