78002000

素因数分解:

$2^4\times 5^3\times {\mathrm{43}}^1\times {\mathrm{907}}^1$

素因数の和:973

約数の個数: 80

約数和(自身を含む): 193207872

約数和(自身を除く): 115205872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 43, 50, 80, 86, 100, 125, 172, 200, 215, 250, 344, 400, 430, 500, 688, 860, 907, 1000, 1075, 1720, 1814, 2000, 2150, 3440, 3628, 4300, 4535, 5375, 7256, 8600, 9070, 10750, 14512, 17200, 18140, 21500, 22675, 36280, 39001, 43000, 45350, 72560, 78002, 86000, 90700, 113375, 156004, 181400, 195005, 226750, 312008, 362800, 390010, 453500, 624016, 780020, 907000, 975025, 1560040, 1814000, 1950050, 3120080, 3900100, 4875125, 7800200, 9750250, 15600400, 19500500, 39001000, 78002000]

約数ペア:

[(1, 78002000), (2, 39001000), (4, 19500500), (5, 15600400), (8, 9750250), (10, 7800200), (16, 4875125), (20, 3900100), (25, 3120080), (40, 1950050), (43, 1814000), (50, 1560040), (80, 975025), (86, 907000), (100, 780020), (125, 624016), (172, 453500), (200, 390010), (215, 362800), (250, 312008), (344, 226750), (400, 195005), (430, 181400), (500, 156004), (688, 113375), (860, 90700), (907, 86000), (1000, 78002), (1075, 72560), (1720, 45350), (1814, 43000), (2000, 39001), (2150, 36280), (3440, 22675), (3628, 21500), (4300, 18140), (4535, 17200), (5375, 14512), (7256, 10750), (8600, 9070)]