21588710

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{487}}^1$

素因数の和:549

約数の個数: 64

約数和(自身を含む): 47222784

約数和(自身を除く): 25634074

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 31, 55, 62, 65, 110, 130, 143, 155, 286, 310, 341, 403, 487, 682, 715, 806, 974, 1430, 1705, 2015, 2435, 3410, 4030, 4433, 4870, 5357, 6331, 8866, 10714, 12662, 15097, 22165, 26785, 30194, 31655, 44330, 53570, 63310, 69641, 75485, 139282, 150970, 166067, 196261, 332134, 348205, 392522, 696410, 830335, 981305, 1660670, 1962610, 2158871, 4317742, 10794355, 21588710]

約数ペア:

[(1, 21588710), (2, 10794355), (5, 4317742), (10, 2158871), (11, 1962610), (13, 1660670), (22, 981305), (26, 830335), (31, 696410), (55, 392522), (62, 348205), (65, 332134), (110, 196261), (130, 166067), (143, 150970), (155, 139282), (286, 75485), (310, 69641), (341, 63310), (403, 53570), (487, 44330), (682, 31655), (715, 30194), (806, 26785), (974, 22165), (1430, 15097), (1705, 12662), (2015, 10714), (2435, 8866), (3410, 6331), (4030, 5357), (4433, 4870)]