21666276

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1$

素因数の和:361

約数の個数: 72

約数和(自身を含む): 57867264

約数和(自身を除く): 36200988

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 137, 138, 191, 207, 274, 276, 382, 411, 414, 548, 573, 764, 822, 828, 1146, 1233, 1644, 1719, 2292, 2466, 3151, 3438, 4393, 4932, 6302, 6876, 8786, 9453, 12604, 13179, 17572, 18906, 26167, 26358, 28359, 37812, 39537, 52334, 52716, 56718, 78501, 79074, 104668, 113436, 157002, 158148, 235503, 314004, 471006, 601841, 942012, 1203682, 1805523, 2407364, 3611046, 5416569, 7222092, 10833138, 21666276]

約数ペア:

[(1, 21666276), (2, 10833138), (3, 7222092), (4, 5416569), (6, 3611046), (9, 2407364), (12, 1805523), (18, 1203682), (23, 942012), (36, 601841), (46, 471006), (69, 314004), (92, 235503), (137, 158148), (138, 157002), (191, 113436), (207, 104668), (274, 79074), (276, 78501), (382, 56718), (411, 52716), (414, 52334), (548, 39537), (573, 37812), (764, 28359), (822, 26358), (828, 26167), (1146, 18906), (1233, 17572), (1644, 13179), (1719, 12604), (2292, 9453), (2466, 8786), (3151, 6876), (3438, 6302), (4393, 4932)]