9919900

素因数分解:

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

素因数の和:283

約数の個数: 72

約数和(自身を含む): 23748480

約数和(自身を除く): 13828580

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 25, 38, 46, 50, 76, 92, 95, 100, 115, 190, 227, 230, 380, 437, 454, 460, 475, 575, 874, 908, 950, 1135, 1150, 1748, 1900, 2185, 2270, 2300, 4313, 4370, 4540, 5221, 5675, 8626, 8740, 10442, 10925, 11350, 17252, 20884, 21565, 21850, 22700, 26105, 43130, 43700, 52210, 86260, 99199, 104420, 107825, 130525, 198398, 215650, 261050, 396796, 431300, 495995, 522100, 991990, 1983980, 2479975, 4959950, 9919900]

約数ペア:

[(1, 9919900), (2, 4959950), (4, 2479975), (5, 1983980), (10, 991990), (19, 522100), (20, 495995), (23, 431300), (25, 396796), (38, 261050), (46, 215650), (50, 198398), (76, 130525), (92, 107825), (95, 104420), (100, 99199), (115, 86260), (190, 52210), (227, 43700), (230, 43130), (380, 26105), (437, 22700), (454, 21850), (460, 21565), (475, 20884), (575, 17252), (874, 11350), (908, 10925), (950, 10442), (1135, 8740), (1150, 8626), (1748, 5675), (1900, 5221), (2185, 4540), (2270, 4370), (2300, 4313)]