20802015

素因数分解:

$3^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1$

素因数の和:475

約数の個数: 56

約数和(自身を含む): 40397280

約数和(自身を除く): 19595265

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 243, 351, 405, 439, 585, 729, 1053, 1215, 1317, 1755, 2195, 3159, 3645, 3951, 5265, 5707, 6585, 9477, 11853, 15795, 17121, 19755, 28535, 35559, 47385, 51363, 59265, 85605, 106677, 154089, 177795, 256815, 320031, 462267, 533385, 770445, 1386801, 1600155, 2311335, 4160403, 6934005, 20802015]

約数ペア:

[(1, 20802015), (3, 6934005), (5, 4160403), (9, 2311335), (13, 1600155), (15, 1386801), (27, 770445), (39, 533385), (45, 462267), (65, 320031), (81, 256815), (117, 177795), (135, 154089), (195, 106677), (243, 85605), (351, 59265), (405, 51363), (439, 47385), (585, 35559), (729, 28535), (1053, 19755), (1215, 17121), (1317, 15795), (1755, 11853), (2195, 9477), (3159, 6585), (3645, 5707), (3951, 5265)]