20265390

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{197}}^1$

素因数の和:343

約数の個数: 80

約数和(自身を含む): 55199232

約数和(自身を除く): 34933842

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 127, 135, 162, 197, 254, 270, 381, 394, 405, 591, 635, 762, 810, 985, 1143, 1182, 1270, 1773, 1905, 1970, 2286, 2955, 3429, 3546, 3810, 5319, 5715, 5910, 6858, 8865, 10287, 10638, 11430, 15957, 17145, 17730, 20574, 25019, 26595, 31914, 34290, 50038, 51435, 53190, 75057, 79785, 102870, 125095, 150114, 159570, 225171, 250190, 375285, 450342, 675513, 750570, 1125855, 1351026, 2026539, 2251710, 3377565, 4053078, 6755130, 10132695, 20265390]

約数ペア:

[(1, 20265390), (2, 10132695), (3, 6755130), (5, 4053078), (6, 3377565), (9, 2251710), (10, 2026539), (15, 1351026), (18, 1125855), (27, 750570), (30, 675513), (45, 450342), (54, 375285), (81, 250190), (90, 225171), (127, 159570), (135, 150114), (162, 125095), (197, 102870), (254, 79785), (270, 75057), (381, 53190), (394, 51435), (405, 50038), (591, 34290), (635, 31914), (762, 26595), (810, 25019), (985, 20574), (1143, 17730), (1182, 17145), (1270, 15957), (1773, 11430), (1905, 10638), (1970, 10287), (2286, 8865), (2955, 6858), (3429, 5910), (3546, 5715), (3810, 5319)]