655881728

素因数分解:

$2^9\times {\mathrm{491}}^1\times {\mathrm{2609}}^1$

素因数の和:3118

約数の個数: 40

約数和(自身を含む): 1313654760

約数和(自身を除く): 657773032

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 491, 512, 982, 1964, 2609, 3928, 5218, 7856, 10436, 15712, 20872, 31424, 41744, 62848, 83488, 125696, 166976, 251392, 333952, 667904, 1281019, 1335808, 2562038, 5124076, 10248152, 20496304, 40992608, 81985216, 163970432, 327940864, 655881728]

約数ペア:

[(1, 655881728), (2, 327940864), (4, 163970432), (8, 81985216), (16, 40992608), (32, 20496304), (64, 10248152), (128, 5124076), (256, 2562038), (491, 1335808), (512, 1281019), (982, 667904), (1964, 333952), (2609, 251392), (3928, 166976), (5218, 125696), (7856, 83488), (10436, 62848), (15712, 41744), (20872, 31424)]