20466320

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{227}}^1$

素因数の和:277

約数の個数: 120

約数和(自身を含む): 58014144

約数和(自身を除く): 37547824

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 49, 56, 70, 80, 92, 98, 112, 115, 140, 161, 184, 196, 227, 230, 245, 280, 322, 368, 392, 454, 460, 490, 560, 644, 784, 805, 908, 920, 980, 1127, 1135, 1288, 1589, 1610, 1816, 1840, 1960, 2254, 2270, 2576, 3178, 3220, 3632, 3920, 4508, 4540, 5221, 5635, 6356, 6440, 7945, 9016, 9080, 10442, 11123, 11270, 12712, 12880, 15890, 18032, 18160, 20884, 22246, 22540, 25424, 26105, 31780, 36547, 41768, 44492, 45080, 52210, 55615, 63560, 73094, 83536, 88984, 90160, 104420, 111230, 127120, 146188, 177968, 182735, 208840, 222460, 255829, 292376, 365470, 417680, 444920, 511658, 584752, 730940, 889840, 1023316, 1279145, 1461880, 2046632, 2558290, 2923760, 4093264, 5116580, 10233160, 20466320]

約数ペア:

[(1, 20466320), (2, 10233160), (4, 5116580), (5, 4093264), (7, 2923760), (8, 2558290), (10, 2046632), (14, 1461880), (16, 1279145), (20, 1023316), (23, 889840), (28, 730940), (35, 584752), (40, 511658), (46, 444920), (49, 417680), (56, 365470), (70, 292376), (80, 255829), (92, 222460), (98, 208840), (112, 182735), (115, 177968), (140, 146188), (161, 127120), (184, 111230), (196, 104420), (227, 90160), (230, 88984), (245, 83536), (280, 73094), (322, 63560), (368, 55615), (392, 52210), (454, 45080), (460, 44492), (490, 41768), (560, 36547), (644, 31780), (784, 26105), (805, 25424), (908, 22540), (920, 22246), (980, 20884), (1127, 18160), (1135, 18032), (1288, 15890), (1589, 12880), (1610, 12712), (1816, 11270), (1840, 11123), (1960, 10442), (2254, 9080), (2270, 9016), (2576, 7945), (3178, 6440), (3220, 6356), (3632, 5635), (3920, 5221), (4508, 4540)]