21717228

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{431}}^1$

素因数の和:487

約数の個数: 96

約数和(自身を含む): 60963840

約数和(自身を除く): 39246612

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 19, 26, 34, 38, 39, 51, 52, 57, 68, 76, 78, 102, 114, 156, 204, 221, 228, 247, 323, 431, 442, 494, 646, 663, 741, 862, 884, 969, 988, 1292, 1293, 1326, 1482, 1724, 1938, 2586, 2652, 2964, 3876, 4199, 5172, 5603, 7327, 8189, 8398, 11206, 12597, 14654, 16378, 16796, 16809, 21981, 22412, 24567, 25194, 29308, 32756, 33618, 43962, 49134, 50388, 67236, 87924, 95251, 98268, 106457, 139213, 190502, 212914, 278426, 285753, 319371, 381004, 417639, 425828, 556852, 571506, 638742, 835278, 1143012, 1277484, 1670556, 1809769, 3619538, 5429307, 7239076, 10858614, 21717228]

約数ペア:

[(1, 21717228), (2, 10858614), (3, 7239076), (4, 5429307), (6, 3619538), (12, 1809769), (13, 1670556), (17, 1277484), (19, 1143012), (26, 835278), (34, 638742), (38, 571506), (39, 556852), (51, 425828), (52, 417639), (57, 381004), (68, 319371), (76, 285753), (78, 278426), (102, 212914), (114, 190502), (156, 139213), (204, 106457), (221, 98268), (228, 95251), (247, 87924), (323, 67236), (431, 50388), (442, 49134), (494, 43962), (646, 33618), (663, 32756), (741, 29308), (862, 25194), (884, 24567), (969, 22412), (988, 21981), (1292, 16809), (1293, 16796), (1326, 16378), (1482, 14654), (1724, 12597), (1938, 11206), (2586, 8398), (2652, 8189), (2964, 7327), (3876, 5603), (4199, 5172)]