20856990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{9029}}^1$

素因数の和:9057

約数の個数: 64

約数和(自身を含む): 62415360

約数和(自身を除く): 41558370

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 30, 33, 35, 42, 55, 66, 70, 77, 105, 110, 154, 165, 210, 231, 330, 385, 462, 770, 1155, 2310, 9029, 18058, 27087, 45145, 54174, 63203, 90290, 99319, 126406, 135435, 189609, 198638, 270870, 297957, 316015, 379218, 496595, 595914, 632030, 695233, 948045, 993190, 1390466, 1489785, 1896090, 2085699, 2979570, 3476165, 4171398, 6952330, 10428495, 20856990]

約数ペア:

[(1, 20856990), (2, 10428495), (3, 6952330), (5, 4171398), (6, 3476165), (7, 2979570), (10, 2085699), (11, 1896090), (14, 1489785), (15, 1390466), (21, 993190), (22, 948045), (30, 695233), (33, 632030), (35, 595914), (42, 496595), (55, 379218), (66, 316015), (70, 297957), (77, 270870), (105, 198638), (110, 189609), (154, 135435), (165, 126406), (210, 99319), (231, 90290), (330, 63203), (385, 54174), (462, 45145), (770, 27087), (1155, 18058), (2310, 9029)]