20057440

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9643}}^1$

素因数の和:9671

約数の個数: 48

約数和(自身を含む): 51036048

約数和(自身を除く): 30978608

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9643, 19286, 38572, 48215, 77144, 96430, 125359, 154288, 192860, 250718, 308576, 385720, 501436, 626795, 771440, 1002872, 1253590, 1542880, 2005744, 2507180, 4011488, 5014360, 10028720, 20057440]

約数ペア:

[(1, 20057440), (2, 10028720), (4, 5014360), (5, 4011488), (8, 2507180), (10, 2005744), (13, 1542880), (16, 1253590), (20, 1002872), (26, 771440), (32, 626795), (40, 501436), (52, 385720), (65, 308576), (80, 250718), (104, 192860), (130, 154288), (160, 125359), (208, 96430), (260, 77144), (416, 48215), (520, 38572), (1040, 19286), (2080, 9643)]