216397020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{515231}}^1$

素因数の和:515250

約数の個数: 48

約数和(自身を含む): 692471808

約数和(自身を除く): 476074788

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 515231, 1030462, 1545693, 2060924, 2576155, 3091386, 3606617, 5152310, 6182772, 7213234, 7728465, 10304620, 10819851, 14426468, 15456930, 18033085, 21639702, 30913860, 36066170, 43279404, 54099255, 72132340, 108198510, 216397020]

約数ペア:

[(1, 216397020), (2, 108198510), (3, 72132340), (4, 54099255), (5, 43279404), (6, 36066170), (7, 30913860), (10, 21639702), (12, 18033085), (14, 15456930), (15, 14426468), (20, 10819851), (21, 10304620), (28, 7728465), (30, 7213234), (35, 6182772), (42, 5152310), (60, 3606617), (70, 3091386), (84, 2576155), (105, 2060924), (140, 1545693), (210, 1030462), (420, 515231)]