20653620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26479}}^1$

素因数の和:26504

約数の個数: 48

約数和(自身を含む): 62280960

約数和(自身を除く): 41627340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26479, 52958, 79437, 105916, 132395, 158874, 264790, 317748, 344227, 397185, 529580, 688454, 794370, 1032681, 1376908, 1588740, 1721135, 2065362, 3442270, 4130724, 5163405, 6884540, 10326810, 20653620]

約数ペア:

[(1, 20653620), (2, 10326810), (3, 6884540), (4, 5163405), (5, 4130724), (6, 3442270), (10, 2065362), (12, 1721135), (13, 1588740), (15, 1376908), (20, 1032681), (26, 794370), (30, 688454), (39, 529580), (52, 397185), (60, 344227), (65, 317748), (78, 264790), (130, 158874), (156, 132395), (195, 105916), (260, 79437), (390, 52958), (780, 26479)]