1722820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 4064256

約数和(自身を除く): 2341436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 191, 205, 220, 382, 410, 451, 764, 820, 902, 955, 1804, 1910, 2101, 2255, 3820, 4202, 4510, 7831, 8404, 9020, 10505, 15662, 21010, 31324, 39155, 42020, 78310, 86141, 156620, 172282, 344564, 430705, 861410, 1722820]

約数ペア:

[(1, 1722820), (2, 861410), (4, 430705), (5, 344564), (10, 172282), (11, 156620), (20, 86141), (22, 78310), (41, 42020), (44, 39155), (55, 31324), (82, 21010), (110, 15662), (164, 10505), (191, 9020), (205, 8404), (220, 7831), (382, 4510), (410, 4202), (451, 3820), (764, 2255), (820, 2101), (902, 1910), (955, 1804)]