20284965

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 18422235

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 47, 69, 115, 135, 139, 141, 207, 235, 345, 417, 423, 621, 695, 705, 1035, 1081, 1251, 1269, 2085, 2115, 3105, 3197, 3243, 3753, 5405, 6255, 6345, 6533, 9591, 9729, 15985, 16215, 18765, 19599, 28773, 29187, 32665, 47955, 48645, 58797, 86319, 97995, 143865, 145935, 150259, 176391, 293985, 431595, 450777, 751295, 881955, 1352331, 2253885, 4056993, 6761655, 20284965]

約数ペア:

[(1, 20284965), (3, 6761655), (5, 4056993), (9, 2253885), (15, 1352331), (23, 881955), (27, 751295), (45, 450777), (47, 431595), (69, 293985), (115, 176391), (135, 150259), (139, 145935), (141, 143865), (207, 97995), (235, 86319), (345, 58797), (417, 48645), (423, 47955), (621, 32665), (695, 29187), (705, 28773), (1035, 19599), (1081, 18765), (1251, 16215), (1269, 15985), (2085, 9729), (2115, 9591), (3105, 6533), (3197, 6345), (3243, 6255), (3753, 5405)]