18019365

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{307}}^1$

素因数の和:378

約数の個数: 64

約数和(自身を含む): 36427776

約数和(自身を除く): 18408411

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 43, 65, 91, 105, 129, 195, 215, 273, 301, 307, 455, 559, 645, 903, 921, 1365, 1505, 1535, 1677, 2149, 2795, 3913, 3991, 4515, 4605, 6447, 8385, 10745, 11739, 11973, 13201, 19565, 19955, 27937, 32235, 39603, 58695, 59865, 66005, 83811, 92407, 139685, 171613, 198015, 277221, 419055, 462035, 514839, 858065, 1201291, 1386105, 2574195, 3603873, 6006455, 18019365]

約数ペア:

[(1, 18019365), (3, 6006455), (5, 3603873), (7, 2574195), (13, 1386105), (15, 1201291), (21, 858065), (35, 514839), (39, 462035), (43, 419055), (65, 277221), (91, 198015), (105, 171613), (129, 139685), (195, 92407), (215, 83811), (273, 66005), (301, 59865), (307, 58695), (455, 39603), (559, 32235), (645, 27937), (903, 19955), (921, 19565), (1365, 13201), (1505, 11973), (1535, 11739), (1677, 10745), (2149, 8385), (2795, 6447), (3913, 4605), (3991, 4515)]