20489520160

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^2\times {\mathrm{45589}}^1$

素因数の和:45710

約数の個数: 72

約数和(自身を含む): 49338136260

約数和(自身を除く): 28848616100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2809, 4240, 5618, 8480, 11236, 14045, 22472, 28090, 44944, 45589, 56180, 89888, 91178, 112360, 182356, 224720, 227945, 364712, 449440, 455890, 729424, 911780, 1458848, 1823560, 2416217, 3647120, 4832434, 7294240, 9664868, 12081085, 19329736, 24162170, 38659472, 48324340, 77318944, 96648680, 128059501, 193297360, 256119002, 386594720, 512238004, 640297505, 1024476008, 1280595010, 2048952016, 2561190020, 4097904032, 5122380040, 10244760080, 20489520160]

約数ペア:

[(1, 20489520160), (2, 10244760080), (4, 5122380040), (5, 4097904032), (8, 2561190020), (10, 2048952016), (16, 1280595010), (20, 1024476008), (32, 640297505), (40, 512238004), (53, 386594720), (80, 256119002), (106, 193297360), (160, 128059501), (212, 96648680), (265, 77318944), (424, 48324340), (530, 38659472), (848, 24162170), (1060, 19329736), (1696, 12081085), (2120, 9664868), (2809, 7294240), (4240, 4832434), (5618, 3647120), (8480, 2416217), (11236, 1823560), (14045, 1458848), (22472, 911780), (28090, 729424), (44944, 455890), (45589, 449440), (56180, 364712), (89888, 227945), (91178, 224720), (112360, 182356)]