399131200

素因数分解:

$2^6\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{619}}^1$

素因数の和:685

約数の個数: 168

約数和(自身を含む): 1093541120

約数和(自身を除く): 694409920

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, 130, 155, 160, 200, 208, 248, 260, 310, 320, 325, 400, 403, 416, 496, 520, 619, 620, 650, 775, 800, 806, 832, 992, 1040, 1238, 1240, 1300, 1550, 1600, 1612, 1984, 2015, 2080, 2476, 2480, 2600, 3095, 3100, 3224, 4030, 4160, 4952, 4960, 5200, 6190, 6200, 6448, 8047, 8060, 9904, 9920, 10075, 10400, 12380, 12400, 12896, 15475, 16094, 16120, 19189, 19808, 20150, 20800, 24760, 24800, 25792, 30950, 32188, 32240, 38378, 39616, 40235, 40300, 49520, 49600, 61900, 64376, 64480, 76756, 80470, 80600, 95945, 99040, 123800, 128752, 128960, 153512, 160940, 161200, 191890, 198080, 201175, 247600, 249457, 257504, 307024, 321880, 322400, 383780, 402350, 479725, 495200, 498914, 515008, 614048, 643760, 644800, 767560, 804700, 959450, 990400, 997828, 1228096, 1247285, 1287520, 1535120, 1609400, 1918900, 1995656, 2494570, 2575040, 3070240, 3218800, 3837800, 3991312, 4989140, 6140480, 6236425, 6437600, 7675600, 7982624, 9978280, 12472850, 12875200, 15351200, 15965248, 19956560, 24945700, 30702400, 39913120, 49891400, 79826240, 99782800, 199565600, 399131200]

約数ペア:

[(1, 399131200), (2, 199565600), (4, 99782800), (5, 79826240), (8, 49891400), (10, 39913120), (13, 30702400), (16, 24945700), (20, 19956560), (25, 15965248), (26, 15351200), (31, 12875200), (32, 12472850), (40, 9978280), (50, 7982624), (52, 7675600), (62, 6437600), (64, 6236425), (65, 6140480), (80, 4989140), (100, 3991312), (104, 3837800), (124, 3218800), (130, 3070240), (155, 2575040), (160, 2494570), (200, 1995656), (208, 1918900), (248, 1609400), (260, 1535120), (310, 1287520), (320, 1247285), (325, 1228096), (400, 997828), (403, 990400), (416, 959450), (496, 804700), (520, 767560), (619, 644800), (620, 643760), (650, 614048), (775, 515008), (800, 498914), (806, 495200), (832, 479725), (992, 402350), (1040, 383780), (1238, 322400), (1240, 321880), (1300, 307024), (1550, 257504), (1600, 249457), (1612, 247600), (1984, 201175), (2015, 198080), (2080, 191890), (2476, 161200), (2480, 160940), (2600, 153512), (3095, 128960), (3100, 128752), (3224, 123800), (4030, 99040), (4160, 95945), (4952, 80600), (4960, 80470), (5200, 76756), (6190, 64480), (6200, 64376), (6448, 61900), (8047, 49600), (8060, 49520), (9904, 40300), (9920, 40235), (10075, 39616), (10400, 38378), (12380, 32240), (12400, 32188), (12896, 30950), (15475, 25792), (16094, 24800), (16120, 24760), (19189, 20800), (19808, 20150)]