21506976

素因数分解:

$2^5\times 3^2\times {\mathrm{53}}^1\times {\mathrm{1409}}^1$

素因数の和:1478

約数の個数: 72

約数和(自身を含む): 62358660

約数和(自身を除く): 40851684

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 53, 72, 96, 106, 144, 159, 212, 288, 318, 424, 477, 636, 848, 954, 1272, 1409, 1696, 1908, 2544, 2818, 3816, 4227, 5088, 5636, 7632, 8454, 11272, 12681, 15264, 16908, 22544, 25362, 33816, 45088, 50724, 67632, 74677, 101448, 135264, 149354, 202896, 224031, 298708, 405792, 448062, 597416, 672093, 896124, 1194832, 1344186, 1792248, 2389664, 2688372, 3584496, 5376744, 7168992, 10753488, 21506976]

約数ペア:

[(1, 21506976), (2, 10753488), (3, 7168992), (4, 5376744), (6, 3584496), (8, 2688372), (9, 2389664), (12, 1792248), (16, 1344186), (18, 1194832), (24, 896124), (32, 672093), (36, 597416), (48, 448062), (53, 405792), (72, 298708), (96, 224031), (106, 202896), (144, 149354), (159, 135264), (212, 101448), (288, 74677), (318, 67632), (424, 50724), (477, 45088), (636, 33816), (848, 25362), (954, 22544), (1272, 16908), (1409, 15264), (1696, 12681), (1908, 11272), (2544, 8454), (2818, 7632), (3816, 5636), (4227, 5088)]