21245472

素因数分解:

$2^5\times 3^2\times {\mathrm{71}}^1\times {\mathrm{1039}}^1$

素因数の和:1126

約数の個数: 72

約数和(自身を含む): 61326720

約数和(自身を除く): 40081248

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 71, 72, 96, 142, 144, 213, 284, 288, 426, 568, 639, 852, 1039, 1136, 1278, 1704, 2078, 2272, 2556, 3117, 3408, 4156, 5112, 6234, 6816, 8312, 9351, 10224, 12468, 16624, 18702, 20448, 24936, 33248, 37404, 49872, 73769, 74808, 99744, 147538, 149616, 221307, 295076, 299232, 442614, 590152, 663921, 885228, 1180304, 1327842, 1770456, 2360608, 2655684, 3540912, 5311368, 7081824, 10622736, 21245472]

約数ペア:

[(1, 21245472), (2, 10622736), (3, 7081824), (4, 5311368), (6, 3540912), (8, 2655684), (9, 2360608), (12, 1770456), (16, 1327842), (18, 1180304), (24, 885228), (32, 663921), (36, 590152), (48, 442614), (71, 299232), (72, 295076), (96, 221307), (142, 149616), (144, 147538), (213, 99744), (284, 74808), (288, 73769), (426, 49872), (568, 37404), (639, 33248), (852, 24936), (1039, 20448), (1136, 18702), (1278, 16624), (1704, 12468), (2078, 10224), (2272, 9351), (2556, 8312), (3117, 6816), (3408, 6234), (4156, 5112)]