1983980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{227}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 4596480

約数和(自身を除く): 2612500

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 227, 230, 380, 437, 454, 460, 874, 908, 1135, 1748, 2185, 2270, 4313, 4370, 4540, 5221, 8626, 8740, 10442, 17252, 20884, 21565, 26105, 43130, 52210, 86260, 99199, 104420, 198398, 396796, 495995, 991990, 1983980]

約数ペア:

[(1, 1983980), (2, 991990), (4, 495995), (5, 396796), (10, 198398), (19, 104420), (20, 99199), (23, 86260), (38, 52210), (46, 43130), (76, 26105), (92, 21565), (95, 20884), (115, 17252), (190, 10442), (227, 8740), (230, 8626), (380, 5221), (437, 4540), (454, 4370), (460, 4313), (874, 2270), (908, 2185), (1135, 1748)]