21155360

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6959}}^1$

素因数の和:6993

約数の個数: 48

約数和(自身を含む): 52617600

約数和(自身を除く): 31462240

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 6959, 13918, 27836, 34795, 55672, 69590, 111344, 132221, 139180, 222688, 264442, 278360, 528884, 556720, 661105, 1057768, 1113440, 1322210, 2115536, 2644420, 4231072, 5288840, 10577680, 21155360]

約数ペア:

[(1, 21155360), (2, 10577680), (4, 5288840), (5, 4231072), (8, 2644420), (10, 2115536), (16, 1322210), (19, 1113440), (20, 1057768), (32, 661105), (38, 556720), (40, 528884), (76, 278360), (80, 264442), (95, 222688), (152, 139180), (160, 132221), (190, 111344), (304, 69590), (380, 55672), (608, 34795), (760, 27836), (1520, 13918), (3040, 6959)]