789989000

素因数分解:

$2^3\times 5^3\times {\mathrm{29}}^1\times {\mathrm{27241}}^1$

素因数の和:27291

約数の個数: 64

約数和(自身を含む): 1912388400

約数和(自身を除く): 1122399400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 100, 116, 125, 145, 200, 232, 250, 290, 500, 580, 725, 1000, 1160, 1450, 2900, 3625, 5800, 7250, 14500, 27241, 29000, 54482, 108964, 136205, 217928, 272410, 544820, 681025, 789989, 1089640, 1362050, 1579978, 2724100, 3159956, 3405125, 3949945, 5448200, 6319912, 6810250, 7899890, 13620500, 15799780, 19749725, 27241000, 31599560, 39499450, 78998900, 98748625, 157997800, 197497250, 394994500, 789989000]

約数ペア:

[(1, 789989000), (2, 394994500), (4, 197497250), (5, 157997800), (8, 98748625), (10, 78998900), (20, 39499450), (25, 31599560), (29, 27241000), (40, 19749725), (50, 15799780), (58, 13620500), (100, 7899890), (116, 6810250), (125, 6319912), (145, 5448200), (200, 3949945), (232, 3405125), (250, 3159956), (290, 2724100), (500, 1579978), (580, 1362050), (725, 1089640), (1000, 789989), (1160, 681025), (1450, 544820), (2900, 272410), (3625, 217928), (5800, 136205), (7250, 108964), (14500, 54482), (27241, 29000)]