81740800

素因数分解:

$2^{10}\times 5^2\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:164

約数の個数: 132

約数和(自身を含む): 211184896

約数和(自身を除く): 129444096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 103, 124, 128, 155, 160, 200, 206, 248, 256, 310, 320, 400, 412, 496, 512, 515, 620, 640, 775, 800, 824, 992, 1024, 1030, 1240, 1280, 1550, 1600, 1648, 1984, 2060, 2480, 2560, 2575, 3100, 3193, 3200, 3296, 3968, 4120, 4960, 5120, 5150, 6200, 6386, 6400, 6592, 7936, 8240, 9920, 10300, 12400, 12772, 12800, 13184, 15872, 15965, 16480, 19840, 20600, 24800, 25544, 25600, 26368, 31744, 31930, 32960, 39680, 41200, 49600, 51088, 52736, 63860, 65920, 79360, 79825, 82400, 99200, 102176, 105472, 127720, 131840, 158720, 159650, 164800, 198400, 204352, 255440, 263680, 319300, 329600, 396800, 408704, 510880, 527360, 638600, 659200, 793600, 817408, 1021760, 1277200, 1318400, 1634816, 2043520, 2554400, 2636800, 3269632, 4087040, 5108800, 8174080, 10217600, 16348160, 20435200, 40870400, 81740800]

約数ペア:

[(1, 81740800), (2, 40870400), (4, 20435200), (5, 16348160), (8, 10217600), (10, 8174080), (16, 5108800), (20, 4087040), (25, 3269632), (31, 2636800), (32, 2554400), (40, 2043520), (50, 1634816), (62, 1318400), (64, 1277200), (80, 1021760), (100, 817408), (103, 793600), (124, 659200), (128, 638600), (155, 527360), (160, 510880), (200, 408704), (206, 396800), (248, 329600), (256, 319300), (310, 263680), (320, 255440), (400, 204352), (412, 198400), (496, 164800), (512, 159650), (515, 158720), (620, 131840), (640, 127720), (775, 105472), (800, 102176), (824, 99200), (992, 82400), (1024, 79825), (1030, 79360), (1240, 65920), (1280, 63860), (1550, 52736), (1600, 51088), (1648, 49600), (1984, 41200), (2060, 39680), (2480, 32960), (2560, 31930), (2575, 31744), (3100, 26368), (3193, 25600), (3200, 25544), (3296, 24800), (3968, 20600), (4120, 19840), (4960, 16480), (5120, 15965), (5150, 15872), (6200, 13184), (6386, 12800), (6400, 12772), (6592, 12400), (7936, 10300), (8240, 9920)]