128960000

素因数分解:

$2^9\times 5^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:82

約数の個数: 200

約数和(自身を含む): 357935424

約数和(自身を除く): 228975424

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 64, 65, 80, 100, 104, 124, 125, 128, 130, 155, 160, 200, 208, 248, 250, 256, 260, 310, 320, 325, 400, 403, 416, 496, 500, 512, 520, 620, 625, 640, 650, 775, 800, 806, 832, 992, 1000, 1040, 1240, 1250, 1280, 1300, 1550, 1600, 1612, 1625, 1664, 1984, 2000, 2015, 2080, 2480, 2500, 2560, 2600, 3100, 3200, 3224, 3250, 3328, 3875, 3968, 4000, 4030, 4160, 4960, 5000, 5200, 6200, 6400, 6448, 6500, 6656, 7750, 7936, 8000, 8060, 8125, 8320, 9920, 10000, 10075, 10400, 12400, 12800, 12896, 13000, 15500, 15872, 16000, 16120, 16250, 16640, 19375, 19840, 20000, 20150, 20800, 24800, 25792, 26000, 31000, 32000, 32240, 32500, 33280, 38750, 39680, 40000, 40300, 41600, 49600, 50375, 51584, 52000, 62000, 64000, 64480, 65000, 77500, 79360, 80000, 80600, 83200, 99200, 100750, 103168, 104000, 124000, 128960, 130000, 155000, 160000, 161200, 166400, 198400, 201500, 206336, 208000, 248000, 251875, 257920, 260000, 310000, 320000, 322400, 396800, 403000, 416000, 496000, 503750, 515840, 520000, 620000, 644800, 806000, 832000, 992000, 1007500, 1031680, 1040000, 1240000, 1289600, 1612000, 1984000, 2015000, 2080000, 2480000, 2579200, 3224000, 4030000, 4160000, 4960000, 5158400, 6448000, 8060000, 9920000, 12896000, 16120000, 25792000, 32240000, 64480000, 128960000]

約数ペア:

[(1, 128960000), (2, 64480000), (4, 32240000), (5, 25792000), (8, 16120000), (10, 12896000), (13, 9920000), (16, 8060000), (20, 6448000), (25, 5158400), (26, 4960000), (31, 4160000), (32, 4030000), (40, 3224000), (50, 2579200), (52, 2480000), (62, 2080000), (64, 2015000), (65, 1984000), (80, 1612000), (100, 1289600), (104, 1240000), (124, 1040000), (125, 1031680), (128, 1007500), (130, 992000), (155, 832000), (160, 806000), (200, 644800), (208, 620000), (248, 520000), (250, 515840), (256, 503750), (260, 496000), (310, 416000), (320, 403000), (325, 396800), (400, 322400), (403, 320000), (416, 310000), (496, 260000), (500, 257920), (512, 251875), (520, 248000), (620, 208000), (625, 206336), (640, 201500), (650, 198400), (775, 166400), (800, 161200), (806, 160000), (832, 155000), (992, 130000), (1000, 128960), (1040, 124000), (1240, 104000), (1250, 103168), (1280, 100750), (1300, 99200), (1550, 83200), (1600, 80600), (1612, 80000), (1625, 79360), (1664, 77500), (1984, 65000), (2000, 64480), (2015, 64000), (2080, 62000), (2480, 52000), (2500, 51584), (2560, 50375), (2600, 49600), (3100, 41600), (3200, 40300), (3224, 40000), (3250, 39680), (3328, 38750), (3875, 33280), (3968, 32500), (4000, 32240), (4030, 32000), (4160, 31000), (4960, 26000), (5000, 25792), (5200, 24800), (6200, 20800), (6400, 20150), (6448, 20000), (6500, 19840), (6656, 19375), (7750, 16640), (7936, 16250), (8000, 16120), (8060, 16000), (8125, 15872), (8320, 15500), (9920, 13000), (10000, 12896), (10075, 12800), (10400, 12400)]