4005855

素因数分解:

$3^6\times 5^1\times 7^1\times {\mathrm{157}}^1$

素因数の和:187

約数の個数: 56

約数和(自身を含む): 8289312

約数和(自身を除く): 4283457

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 157, 189, 243, 315, 405, 471, 567, 729, 785, 945, 1099, 1215, 1413, 1701, 2355, 2835, 3297, 3645, 4239, 5103, 5495, 7065, 8505, 9891, 12717, 16485, 21195, 25515, 29673, 38151, 49455, 63585, 89019, 114453, 148365, 190755, 267057, 445095, 572265, 801171, 1335285, 4005855]

約数ペア:

[(1, 4005855), (3, 1335285), (5, 801171), (7, 572265), (9, 445095), (15, 267057), (21, 190755), (27, 148365), (35, 114453), (45, 89019), (63, 63585), (81, 49455), (105, 38151), (135, 29673), (157, 25515), (189, 21195), (243, 16485), (315, 12717), (405, 9891), (471, 8505), (567, 7065), (729, 5495), (785, 5103), (945, 4239), (1099, 3645), (1215, 3297), (1413, 2835), (1701, 2355)]