1278390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{991}}^1$

素因数の和:1044

約数の個数: 32

約数和(自身を含む): 3142656

約数和(自身を除く): 1864266

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 991, 1290, 1982, 2973, 4955, 5946, 9910, 14865, 29730, 42613, 85226, 127839, 213065, 255678, 426130, 639195, 1278390]

約数ペア:

[(1, 1278390), (2, 639195), (3, 426130), (5, 255678), (6, 213065), (10, 127839), (15, 85226), (30, 42613), (43, 29730), (86, 14865), (129, 9910), (215, 5946), (258, 4955), (430, 2973), (645, 1982), (991, 1290)]