217615970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4909}}^1$

素因数の和:4971

約数の個数: 64

約数和(自身を含む): 475130880

約数和(自身を除く): 257514910

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 31, 55, 62, 65, 110, 130, 143, 155, 286, 310, 341, 403, 682, 715, 806, 1430, 1705, 2015, 3410, 4030, 4433, 4909, 8866, 9818, 22165, 24545, 44330, 49090, 53999, 63817, 107998, 127634, 152179, 269995, 304358, 319085, 539990, 638170, 701987, 760895, 1403974, 1521790, 1673969, 1978327, 3347938, 3509935, 3956654, 7019870, 8369845, 9891635, 16739690, 19783270, 21761597, 43523194, 108807985, 217615970]

約数ペア:

[(1, 217615970), (2, 108807985), (5, 43523194), (10, 21761597), (11, 19783270), (13, 16739690), (22, 9891635), (26, 8369845), (31, 7019870), (55, 3956654), (62, 3509935), (65, 3347938), (110, 1978327), (130, 1673969), (143, 1521790), (155, 1403974), (286, 760895), (310, 701987), (341, 638170), (403, 539990), (682, 319085), (715, 304358), (806, 269995), (1430, 152179), (1705, 127634), (2015, 107998), (3410, 63817), (4030, 53999), (4433, 49090), (4909, 44330), (8866, 24545), (9818, 22165)]