21375596

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{41}}^2$

素因数の和:131

約数の個数: 54

約数和(自身を含む): 44432724

約数和(自身を除く): 23057128

約数列:

[1, 2, 4, 11, 17, 22, 34, 41, 44, 68, 82, 164, 187, 289, 374, 451, 578, 697, 748, 902, 1156, 1394, 1681, 1804, 2788, 3179, 3362, 6358, 6724, 7667, 11849, 12716, 15334, 18491, 23698, 28577, 30668, 36982, 47396, 57154, 73964, 114308, 130339, 260678, 314347, 485809, 521356, 628694, 971618, 1257388, 1943236, 5343899, 10687798, 21375596]

約数ペア:

[(1, 21375596), (2, 10687798), (4, 5343899), (11, 1943236), (17, 1257388), (22, 971618), (34, 628694), (41, 521356), (44, 485809), (68, 314347), (82, 260678), (164, 130339), (187, 114308), (289, 73964), (374, 57154), (451, 47396), (578, 36982), (697, 30668), (748, 28577), (902, 23698), (1156, 18491), (1394, 15334), (1681, 12716), (1804, 11849), (2788, 7667), (3179, 6724), (3362, 6358)]