20218185

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1$

素因数の和:167

約数の個数: 96

約数和(自身を含む): 42456960

約数和(自身を除く): 22238775

約数列:

[1, 3, 5, 9, 13, 15, 17, 19, 39, 45, 51, 57, 65, 85, 95, 107, 117, 153, 171, 195, 221, 247, 255, 285, 321, 323, 535, 585, 663, 741, 765, 855, 963, 969, 1105, 1235, 1391, 1605, 1615, 1819, 1989, 2033, 2223, 2907, 3315, 3705, 4173, 4199, 4815, 4845, 5457, 6099, 6955, 9095, 9945, 10165, 11115, 12519, 12597, 14535, 16371, 18297, 20865, 20995, 23647, 26429, 27285, 30495, 34561, 37791, 62595, 62985, 70941, 79287, 81855, 91485, 103683, 118235, 132145, 172805, 188955, 212823, 237861, 311049, 354705, 396435, 449293, 518415, 1064115, 1189305, 1347879, 1555245, 2246465, 4043637, 6739395, 20218185]

約数ペア:

[(1, 20218185), (3, 6739395), (5, 4043637), (9, 2246465), (13, 1555245), (15, 1347879), (17, 1189305), (19, 1064115), (39, 518415), (45, 449293), (51, 396435), (57, 354705), (65, 311049), (85, 237861), (95, 212823), (107, 188955), (117, 172805), (153, 132145), (171, 118235), (195, 103683), (221, 91485), (247, 81855), (255, 79287), (285, 70941), (321, 62985), (323, 62595), (535, 37791), (585, 34561), (663, 30495), (741, 27285), (765, 26429), (855, 23647), (963, 20995), (969, 20865), (1105, 18297), (1235, 16371), (1391, 14535), (1605, 12597), (1615, 12519), (1819, 11115), (1989, 10165), (2033, 9945), (2223, 9095), (2907, 6955), (3315, 6099), (3705, 5457), (4173, 4845), (4199, 4815)]