21500820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10859}}^1$

素因数の和:10885

約数の個数: 72

約数和(自身を含む): 71154720

約数和(自身を除く): 49653900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10859, 21718, 32577, 43436, 54295, 65154, 97731, 108590, 119449, 130308, 162885, 195462, 217180, 238898, 325770, 358347, 390924, 477796, 488655, 597245, 651540, 716694, 977310, 1075041, 1194490, 1433388, 1791735, 1954620, 2150082, 2388980, 3583470, 4300164, 5375205, 7166940, 10750410, 21500820]

約数ペア:

[(1, 21500820), (2, 10750410), (3, 7166940), (4, 5375205), (5, 4300164), (6, 3583470), (9, 2388980), (10, 2150082), (11, 1954620), (12, 1791735), (15, 1433388), (18, 1194490), (20, 1075041), (22, 977310), (30, 716694), (33, 651540), (36, 597245), (44, 488655), (45, 477796), (55, 390924), (60, 358347), (66, 325770), (90, 238898), (99, 217180), (110, 195462), (132, 162885), (165, 130308), (180, 119449), (198, 108590), (220, 97731), (330, 65154), (396, 54295), (495, 43436), (660, 32577), (990, 21718), (1980, 10859)]