20874945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{373}}^1$

素因数の和:442

約数の個数: 64

約数和(自身を含む): 42223104

約数和(自身を除く): 21348159

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 41, 65, 91, 105, 123, 195, 205, 273, 287, 373, 455, 533, 615, 861, 1119, 1365, 1435, 1599, 1865, 2611, 2665, 3731, 4305, 4849, 5595, 7833, 7995, 11193, 13055, 14547, 15293, 18655, 24245, 33943, 39165, 45879, 55965, 72735, 76465, 101829, 107051, 169715, 198809, 229395, 321153, 509145, 535255, 596427, 994045, 1391663, 1605765, 2982135, 4174989, 6958315, 20874945]

約数ペア:

[(1, 20874945), (3, 6958315), (5, 4174989), (7, 2982135), (13, 1605765), (15, 1391663), (21, 994045), (35, 596427), (39, 535255), (41, 509145), (65, 321153), (91, 229395), (105, 198809), (123, 169715), (195, 107051), (205, 101829), (273, 76465), (287, 72735), (373, 55965), (455, 45879), (533, 39165), (615, 33943), (861, 24245), (1119, 18655), (1365, 15293), (1435, 14547), (1599, 13055), (1865, 11193), (2611, 7995), (2665, 7833), (3731, 5595), (4305, 4849)]