21335748

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:321

約数の個数: 96

約数和(自身を含む): 61415424

約数和(自身を除く): 40079676

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 42, 51, 67, 68, 84, 102, 119, 134, 201, 204, 223, 238, 268, 357, 402, 446, 469, 476, 669, 714, 804, 892, 938, 1139, 1338, 1407, 1428, 1561, 1876, 2278, 2676, 2814, 3122, 3417, 3791, 4556, 4683, 5628, 6244, 6834, 7582, 7973, 9366, 11373, 13668, 14941, 15164, 15946, 18732, 22746, 23919, 26537, 29882, 31892, 44823, 45492, 47838, 53074, 59764, 79611, 89646, 95676, 104587, 106148, 159222, 179292, 209174, 253997, 313761, 318444, 418348, 507994, 627522, 761991, 1015988, 1255044, 1523982, 1777979, 3047964, 3555958, 5333937, 7111916, 10667874, 21335748]

約数ペア:

[(1, 21335748), (2, 10667874), (3, 7111916), (4, 5333937), (6, 3555958), (7, 3047964), (12, 1777979), (14, 1523982), (17, 1255044), (21, 1015988), (28, 761991), (34, 627522), (42, 507994), (51, 418348), (67, 318444), (68, 313761), (84, 253997), (102, 209174), (119, 179292), (134, 159222), (201, 106148), (204, 104587), (223, 95676), (238, 89646), (268, 79611), (357, 59764), (402, 53074), (446, 47838), (469, 45492), (476, 44823), (669, 31892), (714, 29882), (804, 26537), (892, 23919), (938, 22746), (1139, 18732), (1338, 15946), (1407, 15164), (1428, 14941), (1561, 13668), (1876, 11373), (2278, 9366), (2676, 7973), (2814, 7582), (3122, 6834), (3417, 6244), (3791, 5628), (4556, 4683)]