12688000

素因数分解:

$2^7\times 5^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:103

約数の個数: 128

約数和(自身を含む): 34529040

約数和(自身を除く): 21841040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 61, 64, 65, 80, 100, 104, 122, 125, 128, 130, 160, 200, 208, 244, 250, 260, 305, 320, 325, 400, 416, 488, 500, 520, 610, 640, 650, 793, 800, 832, 976, 1000, 1040, 1220, 1300, 1525, 1586, 1600, 1625, 1664, 1952, 2000, 2080, 2440, 2600, 3050, 3172, 3200, 3250, 3904, 3965, 4000, 4160, 4880, 5200, 6100, 6344, 6500, 7625, 7808, 7930, 8000, 8320, 9760, 10400, 12200, 12688, 13000, 15250, 15860, 16000, 19520, 19825, 20800, 24400, 25376, 26000, 30500, 31720, 39040, 39650, 41600, 48800, 50752, 52000, 61000, 63440, 79300, 97600, 99125, 101504, 104000, 122000, 126880, 158600, 195200, 198250, 208000, 244000, 253760, 317200, 396500, 488000, 507520, 634400, 793000, 976000, 1268800, 1586000, 2537600, 3172000, 6344000, 12688000]

約数ペア:

[(1, 12688000), (2, 6344000), (4, 3172000), (5, 2537600), (8, 1586000), (10, 1268800), (13, 976000), (16, 793000), (20, 634400), (25, 507520), (26, 488000), (32, 396500), (40, 317200), (50, 253760), (52, 244000), (61, 208000), (64, 198250), (65, 195200), (80, 158600), (100, 126880), (104, 122000), (122, 104000), (125, 101504), (128, 99125), (130, 97600), (160, 79300), (200, 63440), (208, 61000), (244, 52000), (250, 50752), (260, 48800), (305, 41600), (320, 39650), (325, 39040), (400, 31720), (416, 30500), (488, 26000), (500, 25376), (520, 24400), (610, 20800), (640, 19825), (650, 19520), (793, 16000), (800, 15860), (832, 15250), (976, 13000), (1000, 12688), (1040, 12200), (1220, 10400), (1300, 9760), (1525, 8320), (1586, 8000), (1600, 7930), (1625, 7808), (1664, 7625), (1952, 6500), (2000, 6344), (2080, 6100), (2440, 5200), (2600, 4880), (3050, 4160), (3172, 4000), (3200, 3965), (3250, 3904)]