66664000

素因数分解:

$2^6\times 5^3\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:681

約数の個数: 112

約数和(自身を含む): 178070256

約数和(自身を除く): 111406256

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, 641, 650, 800, 832, 1000, 1040, 1282, 1300, 1600, 1625, 2000, 2080, 2564, 2600, 3205, 3250, 4000, 4160, 5128, 5200, 6410, 6500, 8000, 8333, 10256, 10400, 12820, 13000, 16025, 16666, 20512, 20800, 25640, 26000, 32050, 33332, 41024, 41665, 51280, 52000, 64100, 66664, 80125, 83330, 102560, 104000, 128200, 133328, 160250, 166660, 205120, 208325, 256400, 266656, 320500, 333320, 416650, 512800, 533312, 641000, 666640, 833300, 1025600, 1041625, 1282000, 1333280, 1666600, 2083250, 2564000, 2666560, 3333200, 4166500, 5128000, 6666400, 8333000, 13332800, 16666000, 33332000, 66664000]

約数ペア:

[(1, 66664000), (2, 33332000), (4, 16666000), (5, 13332800), (8, 8333000), (10, 6666400), (13, 5128000), (16, 4166500), (20, 3333200), (25, 2666560), (26, 2564000), (32, 2083250), (40, 1666600), (50, 1333280), (52, 1282000), (64, 1041625), (65, 1025600), (80, 833300), (100, 666640), (104, 641000), (125, 533312), (130, 512800), (160, 416650), (200, 333320), (208, 320500), (250, 266656), (260, 256400), (320, 208325), (325, 205120), (400, 166660), (416, 160250), (500, 133328), (520, 128200), (641, 104000), (650, 102560), (800, 83330), (832, 80125), (1000, 66664), (1040, 64100), (1282, 52000), (1300, 51280), (1600, 41665), (1625, 41024), (2000, 33332), (2080, 32050), (2564, 26000), (2600, 25640), (3205, 20800), (3250, 20512), (4000, 16666), (4160, 16025), (5128, 13000), (5200, 12820), (6410, 10400), (6500, 10256), (8000, 8333)]