80000320

素因数分解:

$2^6\times 5^1\times {\mathrm{53}}^2\times {\mathrm{89}}^1$

素因数の和:212

約数の個数: 84

約数和(自身を含む): 196344540

約数和(自身を除く): 116344220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 89, 106, 160, 178, 212, 265, 320, 356, 424, 445, 530, 712, 848, 890, 1060, 1424, 1696, 1780, 2120, 2809, 2848, 3392, 3560, 4240, 4717, 5618, 5696, 7120, 8480, 9434, 11236, 14045, 14240, 16960, 18868, 22472, 23585, 28090, 28480, 37736, 44944, 47170, 56180, 75472, 89888, 94340, 112360, 150944, 179776, 188680, 224720, 250001, 301888, 377360, 449440, 500002, 754720, 898880, 1000004, 1250005, 1509440, 2000008, 2500010, 4000016, 5000020, 8000032, 10000040, 16000064, 20000080, 40000160, 80000320]

約数ペア:

[(1, 80000320), (2, 40000160), (4, 20000080), (5, 16000064), (8, 10000040), (10, 8000032), (16, 5000020), (20, 4000016), (32, 2500010), (40, 2000008), (53, 1509440), (64, 1250005), (80, 1000004), (89, 898880), (106, 754720), (160, 500002), (178, 449440), (212, 377360), (265, 301888), (320, 250001), (356, 224720), (424, 188680), (445, 179776), (530, 150944), (712, 112360), (848, 94340), (890, 89888), (1060, 75472), (1424, 56180), (1696, 47170), (1780, 44944), (2120, 37736), (2809, 28480), (2848, 28090), (3392, 23585), (3560, 22472), (4240, 18868), (4717, 16960), (5618, 14240), (5696, 14045), (7120, 11236), (8480, 9434)]