20636080

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:254

約数の個数: 80

約数和(自身を含む): 50782464

約数和(自身を除く): 30146384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 53, 62, 80, 106, 124, 155, 157, 212, 248, 265, 310, 314, 424, 496, 530, 620, 628, 785, 848, 1060, 1240, 1256, 1570, 1643, 2120, 2480, 2512, 3140, 3286, 4240, 4867, 6280, 6572, 8215, 8321, 9734, 12560, 13144, 16430, 16642, 19468, 24335, 26288, 32860, 33284, 38936, 41605, 48670, 65720, 66568, 77872, 83210, 97340, 131440, 133136, 166420, 194680, 257951, 332840, 389360, 515902, 665680, 1031804, 1289755, 2063608, 2579510, 4127216, 5159020, 10318040, 20636080]

約数ペア:

[(1, 20636080), (2, 10318040), (4, 5159020), (5, 4127216), (8, 2579510), (10, 2063608), (16, 1289755), (20, 1031804), (31, 665680), (40, 515902), (53, 389360), (62, 332840), (80, 257951), (106, 194680), (124, 166420), (155, 133136), (157, 131440), (212, 97340), (248, 83210), (265, 77872), (310, 66568), (314, 65720), (424, 48670), (496, 41605), (530, 38936), (620, 33284), (628, 32860), (785, 26288), (848, 24335), (1060, 19468), (1240, 16642), (1256, 16430), (1570, 13144), (1643, 12560), (2120, 9734), (2480, 8321), (2512, 8215), (3140, 6572), (3286, 6280), (4240, 4867)]