21540904

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^3\times {\mathrm{17}}^2$

素因数の和:80

約数の個数: 96

約数和(自身を含む): 53933760

約数和(自身を除く): 32392856

約数列:

[1, 2, 4, 7, 8, 11, 14, 17, 22, 28, 34, 44, 56, 68, 77, 88, 119, 121, 136, 154, 187, 238, 242, 289, 308, 374, 476, 484, 578, 616, 748, 847, 952, 968, 1156, 1309, 1331, 1496, 1694, 2023, 2057, 2312, 2618, 2662, 3179, 3388, 4046, 4114, 5236, 5324, 6358, 6776, 8092, 8228, 9317, 10472, 10648, 12716, 14399, 16184, 16456, 18634, 22253, 22627, 25432, 28798, 34969, 37268, 44506, 45254, 57596, 69938, 74536, 89012, 90508, 115192, 139876, 158389, 178024, 181016, 244783, 279752, 316778, 384659, 489566, 633556, 769318, 979132, 1267112, 1538636, 1958264, 2692613, 3077272, 5385226, 10770452, 21540904]

約数ペア:

[(1, 21540904), (2, 10770452), (4, 5385226), (7, 3077272), (8, 2692613), (11, 1958264), (14, 1538636), (17, 1267112), (22, 979132), (28, 769318), (34, 633556), (44, 489566), (56, 384659), (68, 316778), (77, 279752), (88, 244783), (119, 181016), (121, 178024), (136, 158389), (154, 139876), (187, 115192), (238, 90508), (242, 89012), (289, 74536), (308, 69938), (374, 57596), (476, 45254), (484, 44506), (578, 37268), (616, 34969), (748, 28798), (847, 25432), (952, 22627), (968, 22253), (1156, 18634), (1309, 16456), (1331, 16184), (1496, 14399), (1694, 12716), (2023, 10648), (2057, 10472), (2312, 9317), (2618, 8228), (2662, 8092), (3179, 6776), (3388, 6358), (4046, 5324), (4114, 5236)]