20407400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:243

約数の個数: 96

約数和(自身を含む): 52496640

約数和(自身を除く): 32089240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 47, 50, 52, 65, 94, 100, 104, 130, 167, 188, 200, 235, 260, 325, 334, 376, 470, 520, 611, 650, 668, 835, 940, 1175, 1222, 1300, 1336, 1670, 1880, 2171, 2350, 2444, 2600, 3055, 3340, 4175, 4342, 4700, 4888, 6110, 6680, 7849, 8350, 8684, 9400, 10855, 12220, 15275, 15698, 16700, 17368, 21710, 24440, 30550, 31396, 33400, 39245, 43420, 54275, 61100, 62792, 78490, 86840, 102037, 108550, 122200, 156980, 196225, 204074, 217100, 313960, 392450, 408148, 434200, 510185, 784900, 816296, 1020370, 1569800, 2040740, 2550925, 4081480, 5101850, 10203700, 20407400]

約数ペア:

[(1, 20407400), (2, 10203700), (4, 5101850), (5, 4081480), (8, 2550925), (10, 2040740), (13, 1569800), (20, 1020370), (25, 816296), (26, 784900), (40, 510185), (47, 434200), (50, 408148), (52, 392450), (65, 313960), (94, 217100), (100, 204074), (104, 196225), (130, 156980), (167, 122200), (188, 108550), (200, 102037), (235, 86840), (260, 78490), (325, 62792), (334, 61100), (376, 54275), (470, 43420), (520, 39245), (611, 33400), (650, 31396), (668, 30550), (835, 24440), (940, 21710), (1175, 17368), (1222, 16700), (1300, 15698), (1336, 15275), (1670, 12220), (1880, 10855), (2171, 9400), (2350, 8684), (2444, 8350), (2600, 7849), (3055, 6680), (3340, 6110), (4175, 4888), (4342, 4700)]