18130970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:471

約数の個数: 64

約数和(自身を含む): 39674880

約数和(自身を除く): 21543910

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 31, 55, 62, 65, 110, 130, 143, 155, 286, 310, 341, 403, 409, 682, 715, 806, 818, 1430, 1705, 2015, 2045, 3410, 4030, 4090, 4433, 4499, 5317, 8866, 8998, 10634, 12679, 22165, 22495, 25358, 26585, 44330, 44990, 53170, 58487, 63395, 116974, 126790, 139469, 164827, 278938, 292435, 329654, 584870, 697345, 824135, 1394690, 1648270, 1813097, 3626194, 9065485, 18130970]

約数ペア:

[(1, 18130970), (2, 9065485), (5, 3626194), (10, 1813097), (11, 1648270), (13, 1394690), (22, 824135), (26, 697345), (31, 584870), (55, 329654), (62, 292435), (65, 278938), (110, 164827), (130, 139469), (143, 126790), (155, 116974), (286, 63395), (310, 58487), (341, 53170), (403, 44990), (409, 44330), (682, 26585), (715, 25358), (806, 22495), (818, 22165), (1430, 12679), (1705, 10634), (2015, 8998), (2045, 8866), (3410, 5317), (4030, 4499), (4090, 4433)]