20927595

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:204

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 18263445

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 59, 65, 85, 107, 177, 195, 221, 255, 295, 321, 535, 663, 767, 885, 1003, 1105, 1391, 1605, 1819, 2301, 3009, 3315, 3835, 4173, 5015, 5457, 6313, 6955, 9095, 11505, 13039, 15045, 18939, 20865, 23647, 27285, 31565, 39117, 65195, 70941, 82069, 94695, 107321, 118235, 195585, 246207, 321963, 354705, 410345, 536605, 1231035, 1395173, 1609815, 4185519, 6975865, 20927595]

約数ペア:

[(1, 20927595), (3, 6975865), (5, 4185519), (13, 1609815), (15, 1395173), (17, 1231035), (39, 536605), (51, 410345), (59, 354705), (65, 321963), (85, 246207), (107, 195585), (177, 118235), (195, 107321), (221, 94695), (255, 82069), (295, 70941), (321, 65195), (535, 39117), (663, 31565), (767, 27285), (885, 23647), (1003, 20865), (1105, 18939), (1391, 15045), (1605, 13039), (1819, 11505), (2301, 9095), (3009, 6955), (3315, 6313), (3835, 5457), (4173, 5015)]