20669175

素因数分解:

$3^4\times 5^2\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:254

約数の個数: 60

約数和(自身を含む): 39160440

約数和(自身を除く): 18491265

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 59, 75, 81, 135, 173, 177, 225, 295, 405, 519, 531, 675, 865, 885, 1475, 1557, 1593, 2025, 2595, 2655, 4325, 4425, 4671, 4779, 7785, 7965, 10207, 12975, 13275, 14013, 23355, 23895, 30621, 38925, 39825, 51035, 70065, 91863, 116775, 119475, 153105, 255175, 275589, 350325, 459315, 765525, 826767, 1377945, 2296575, 4133835, 6889725, 20669175]

約数ペア:

[(1, 20669175), (3, 6889725), (5, 4133835), (9, 2296575), (15, 1377945), (25, 826767), (27, 765525), (45, 459315), (59, 350325), (75, 275589), (81, 255175), (135, 153105), (173, 119475), (177, 116775), (225, 91863), (295, 70065), (405, 51035), (519, 39825), (531, 38925), (675, 30621), (865, 23895), (885, 23355), (1475, 14013), (1557, 13275), (1593, 12975), (2025, 10207), (2595, 7965), (2655, 7785), (4325, 4779), (4425, 4671)]