31427840

素因数分解:

$2^8\times 5^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:635

約数の個数: 72

約数和(自身を含む): 77165088

約数和(自身を除く): 45737248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 256, 320, 344, 430, 571, 640, 688, 860, 1142, 1280, 1376, 1720, 2284, 2752, 2855, 3440, 4568, 5504, 5710, 6880, 9136, 11008, 11420, 13760, 18272, 22840, 24553, 27520, 36544, 45680, 49106, 55040, 73088, 91360, 98212, 122765, 146176, 182720, 196424, 245530, 365440, 392848, 491060, 730880, 785696, 982120, 1571392, 1964240, 3142784, 3928480, 6285568, 7856960, 15713920, 31427840]

約数ペア:

[(1, 31427840), (2, 15713920), (4, 7856960), (5, 6285568), (8, 3928480), (10, 3142784), (16, 1964240), (20, 1571392), (32, 982120), (40, 785696), (43, 730880), (64, 491060), (80, 392848), (86, 365440), (128, 245530), (160, 196424), (172, 182720), (215, 146176), (256, 122765), (320, 98212), (344, 91360), (430, 73088), (571, 55040), (640, 49106), (688, 45680), (860, 36544), (1142, 27520), (1280, 24553), (1376, 22840), (1720, 18272), (2284, 13760), (2752, 11420), (2855, 11008), (3440, 9136), (4568, 6880), (5504, 5710)]