2556780

素因数分解:

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

素因数の和:1046

約数の個数: 48

約数和(自身を含む): 7332864

約数和(自身を除く): 4776084

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 991, 1290, 1982, 2580, 2973, 3964, 4955, 5946, 9910, 11892, 14865, 19820, 29730, 42613, 59460, 85226, 127839, 170452, 213065, 255678, 426130, 511356, 639195, 852260, 1278390, 2556780]

約数ペア:

[(1, 2556780), (2, 1278390), (3, 852260), (4, 639195), (5, 511356), (6, 426130), (10, 255678), (12, 213065), (15, 170452), (20, 127839), (30, 85226), (43, 59460), (60, 42613), (86, 29730), (129, 19820), (172, 14865), (215, 11892), (258, 9910), (430, 5946), (516, 4955), (645, 3964), (860, 2973), (991, 2580), (1290, 1982)]