21078372

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:361

約数の個数: 96

約数和(自身を含む): 60641280

約数和(自身を除く): 39562908

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 38, 42, 47, 57, 76, 84, 94, 114, 133, 141, 188, 228, 266, 281, 282, 329, 399, 532, 562, 564, 658, 798, 843, 893, 987, 1124, 1316, 1596, 1686, 1786, 1967, 1974, 2679, 3372, 3572, 3934, 3948, 5339, 5358, 5901, 6251, 7868, 10678, 10716, 11802, 12502, 13207, 16017, 18753, 21356, 23604, 25004, 26414, 32034, 37373, 37506, 39621, 52828, 64068, 74746, 75012, 79242, 92449, 112119, 149492, 158484, 184898, 224238, 250933, 277347, 369796, 448476, 501866, 554694, 752799, 1003732, 1109388, 1505598, 1756531, 3011196, 3513062, 5269593, 7026124, 10539186, 21078372]

約数ペア:

[(1, 21078372), (2, 10539186), (3, 7026124), (4, 5269593), (6, 3513062), (7, 3011196), (12, 1756531), (14, 1505598), (19, 1109388), (21, 1003732), (28, 752799), (38, 554694), (42, 501866), (47, 448476), (57, 369796), (76, 277347), (84, 250933), (94, 224238), (114, 184898), (133, 158484), (141, 149492), (188, 112119), (228, 92449), (266, 79242), (281, 75012), (282, 74746), (329, 64068), (399, 52828), (532, 39621), (562, 37506), (564, 37373), (658, 32034), (798, 26414), (843, 25004), (893, 23604), (987, 21356), (1124, 18753), (1316, 16017), (1596, 13207), (1686, 12502), (1786, 11802), (1967, 10716), (1974, 10678), (2679, 7868), (3372, 6251), (3572, 5901), (3934, 5358), (3948, 5339)]