18662805

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1$

素因数の和:280

約数の個数: 80

約数和(自身を含む): 39726720

約数和(自身を除く): 21063915

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 29, 35, 45, 63, 81, 87, 105, 135, 145, 189, 203, 227, 261, 315, 405, 435, 567, 609, 681, 783, 945, 1015, 1135, 1305, 1589, 1827, 2043, 2349, 2835, 3045, 3405, 3915, 4767, 5481, 6129, 6583, 7945, 9135, 10215, 11745, 14301, 16443, 18387, 19749, 23835, 27405, 30645, 32915, 42903, 46081, 59247, 71505, 82215, 91935, 98745, 128709, 138243, 177741, 214515, 230405, 296235, 414729, 533223, 643545, 691215, 888705, 1244187, 2073645, 2666115, 3732561, 6220935, 18662805]

約数ペア:

[(1, 18662805), (3, 6220935), (5, 3732561), (7, 2666115), (9, 2073645), (15, 1244187), (21, 888705), (27, 691215), (29, 643545), (35, 533223), (45, 414729), (63, 296235), (81, 230405), (87, 214515), (105, 177741), (135, 138243), (145, 128709), (189, 98745), (203, 91935), (227, 82215), (261, 71505), (315, 59247), (405, 46081), (435, 42903), (567, 32915), (609, 30645), (681, 27405), (783, 23835), (945, 19749), (1015, 18387), (1135, 16443), (1305, 14301), (1589, 11745), (1827, 10215), (2043, 9135), (2349, 7945), (2835, 6583), (3045, 6129), (3405, 5481), (3915, 4767)]