21494510

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:185

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22051090

約数列:

[1, 2, 5, 10, 19, 29, 38, 47, 58, 83, 94, 95, 145, 166, 190, 235, 290, 415, 470, 551, 830, 893, 1102, 1363, 1577, 1786, 2407, 2726, 2755, 3154, 3901, 4465, 4814, 5510, 6815, 7802, 7885, 8930, 12035, 13630, 15770, 19505, 24070, 25897, 39010, 45733, 51794, 74119, 91466, 113129, 129485, 148238, 226258, 228665, 258970, 370595, 457330, 565645, 741190, 1131290, 2149451, 4298902, 10747255, 21494510]

約数ペア:

[(1, 21494510), (2, 10747255), (5, 4298902), (10, 2149451), (19, 1131290), (29, 741190), (38, 565645), (47, 457330), (58, 370595), (83, 258970), (94, 228665), (95, 226258), (145, 148238), (166, 129485), (190, 113129), (235, 91466), (290, 74119), (415, 51794), (470, 45733), (551, 39010), (830, 25897), (893, 24070), (1102, 19505), (1363, 15770), (1577, 13630), (1786, 12035), (2407, 8930), (2726, 7885), (2755, 7802), (3154, 6815), (3901, 5510), (4465, 4814)]