3991900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 9999360

約数和(自身を除く): 6007460

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 190, 191, 209, 220, 275, 380, 382, 418, 475, 550, 764, 836, 950, 955, 1045, 1100, 1900, 1910, 2090, 2101, 3629, 3820, 4180, 4202, 4775, 5225, 7258, 8404, 9550, 10450, 10505, 14516, 18145, 19100, 20900, 21010, 36290, 39919, 42020, 52525, 72580, 79838, 90725, 105050, 159676, 181450, 199595, 210100, 362900, 399190, 798380, 997975, 1995950, 3991900]

約数ペア:

[(1, 3991900), (2, 1995950), (4, 997975), (5, 798380), (10, 399190), (11, 362900), (19, 210100), (20, 199595), (22, 181450), (25, 159676), (38, 105050), (44, 90725), (50, 79838), (55, 72580), (76, 52525), (95, 42020), (100, 39919), (110, 36290), (190, 21010), (191, 20900), (209, 19100), (220, 18145), (275, 14516), (380, 10505), (382, 10450), (418, 9550), (475, 8404), (550, 7258), (764, 5225), (836, 4775), (950, 4202), (955, 4180), (1045, 3820), (1100, 3629), (1900, 2101), (1910, 2090)]