21147525

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{463}}^1$

素因数の和:515

約数の個数: 72

約数和(自身を含む): 44878080

約数和(自身を除く): 23730555

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 29, 35, 45, 63, 75, 87, 105, 145, 175, 203, 225, 261, 315, 435, 463, 525, 609, 725, 1015, 1305, 1389, 1575, 1827, 2175, 2315, 3045, 3241, 4167, 5075, 6525, 6945, 9135, 9723, 11575, 13427, 15225, 16205, 20835, 29169, 34725, 40281, 45675, 48615, 67135, 81025, 93989, 104175, 120843, 145845, 201405, 243075, 281967, 335675, 469945, 604215, 729225, 845901, 1007025, 1409835, 2349725, 3021075, 4229505, 7049175, 21147525]

約数ペア:

[(1, 21147525), (3, 7049175), (5, 4229505), (7, 3021075), (9, 2349725), (15, 1409835), (21, 1007025), (25, 845901), (29, 729225), (35, 604215), (45, 469945), (63, 335675), (75, 281967), (87, 243075), (105, 201405), (145, 145845), (175, 120843), (203, 104175), (225, 93989), (261, 81025), (315, 67135), (435, 48615), (463, 45675), (525, 40281), (609, 34725), (725, 29169), (1015, 20835), (1305, 16205), (1389, 15225), (1575, 13427), (1827, 11575), (2175, 9723), (2315, 9135), (3045, 6945), (3241, 6525), (4167, 5075)]