20508540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26293}}^1$

素因数の和:26318

約数の個数: 48

約数和(自身を含む): 61843488

約数和(自身を除く): 41334948

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, 26293, 52586, 78879, 105172, 131465, 157758, 262930, 315516, 341809, 394395, 525860, 683618, 788790, 1025427, 1367236, 1577580, 1709045, 2050854, 3418090, 4101708, 5127135, 6836180, 10254270, 20508540]

約数ペア:

[(1, 20508540), (2, 10254270), (3, 6836180), (4, 5127135), (5, 4101708), (6, 3418090), (10, 2050854), (12, 1709045), (13, 1577580), (15, 1367236), (20, 1025427), (26, 788790), (30, 683618), (39, 525860), (52, 394395), (60, 341809), (65, 315516), (78, 262930), (130, 157758), (156, 131465), (195, 105172), (260, 78879), (390, 52586), (780, 26293)]