649480000

素因数分解:

$2^6\times 5^4\times {\mathrm{13}}^1\times {\mathrm{1249}}^1$

素因数の和:1294

約数の個数: 140

約数和(自身を含む): 1735772500

約数和(自身を除く): 1086292500

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 125, 130, 160, 200, 208, 250, 260, 320, 325, 400, 416, 500, 520, 625, 650, 800, 832, 1000, 1040, 1249, 1250, 1300, 1600, 1625, 2000, 2080, 2498, 2500, 2600, 3250, 4000, 4160, 4996, 5000, 5200, 6245, 6500, 8000, 8125, 9992, 10000, 10400, 12490, 13000, 16237, 16250, 19984, 20000, 20800, 24980, 26000, 31225, 32474, 32500, 39968, 40000, 49960, 52000, 62450, 64948, 65000, 79936, 81185, 99920, 104000, 124900, 129896, 130000, 156125, 162370, 199840, 249800, 259792, 260000, 312250, 324740, 399680, 405925, 499600, 519584, 520000, 624500, 649480, 780625, 811850, 999200, 1039168, 1249000, 1298960, 1561250, 1623700, 1998400, 2029625, 2498000, 2597920, 3122500, 3247400, 4059250, 4996000, 5195840, 6245000, 6494800, 8118500, 9992000, 10148125, 12490000, 12989600, 16237000, 20296250, 24980000, 25979200, 32474000, 40592500, 49960000, 64948000, 81185000, 129896000, 162370000, 324740000, 649480000]

約数ペア:

[(1, 649480000), (2, 324740000), (4, 162370000), (5, 129896000), (8, 81185000), (10, 64948000), (13, 49960000), (16, 40592500), (20, 32474000), (25, 25979200), (26, 24980000), (32, 20296250), (40, 16237000), (50, 12989600), (52, 12490000), (64, 10148125), (65, 9992000), (80, 8118500), (100, 6494800), (104, 6245000), (125, 5195840), (130, 4996000), (160, 4059250), (200, 3247400), (208, 3122500), (250, 2597920), (260, 2498000), (320, 2029625), (325, 1998400), (400, 1623700), (416, 1561250), (500, 1298960), (520, 1249000), (625, 1039168), (650, 999200), (800, 811850), (832, 780625), (1000, 649480), (1040, 624500), (1249, 520000), (1250, 519584), (1300, 499600), (1600, 405925), (1625, 399680), (2000, 324740), (2080, 312250), (2498, 260000), (2500, 259792), (2600, 249800), (3250, 199840), (4000, 162370), (4160, 156125), (4996, 130000), (5000, 129896), (5200, 124900), (6245, 104000), (6500, 99920), (8000, 81185), (8125, 79936), (9992, 65000), (10000, 64948), (10400, 62450), (12490, 52000), (13000, 49960), (16237, 40000), (16250, 39968), (19984, 32500), (20000, 32474), (20800, 31225), (24980, 26000)]