21251538

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{269}}^1$

素因数の和:317

約数の個数: 128

約数和(自身を含む): 62208000

約数和(自身を除く): 40956462

約数列:

[1, 2, 3, 6, 7, 9, 11, 14, 18, 19, 21, 22, 27, 33, 38, 42, 54, 57, 63, 66, 77, 99, 114, 126, 133, 154, 171, 189, 198, 209, 231, 266, 269, 297, 342, 378, 399, 418, 462, 513, 538, 594, 627, 693, 798, 807, 1026, 1197, 1254, 1386, 1463, 1614, 1881, 1883, 2079, 2394, 2421, 2926, 2959, 3591, 3762, 3766, 4158, 4389, 4842, 5111, 5643, 5649, 5918, 7182, 7263, 8778, 8877, 10222, 11286, 11298, 13167, 14526, 15333, 16947, 17754, 20713, 26334, 26631, 30666, 33894, 35777, 39501, 41426, 45999, 50841, 53262, 56221, 62139, 71554, 79002, 79893, 91998, 101682, 107331, 112442, 124278, 137997, 159786, 168663, 186417, 214662, 275994, 321993, 337326, 372834, 393547, 505989, 559251, 643986, 787094, 965979, 1011978, 1118502, 1180641, 1517967, 1931958, 2361282, 3035934, 3541923, 7083846, 10625769, 21251538]

約数ペア:

[(1, 21251538), (2, 10625769), (3, 7083846), (6, 3541923), (7, 3035934), (9, 2361282), (11, 1931958), (14, 1517967), (18, 1180641), (19, 1118502), (21, 1011978), (22, 965979), (27, 787094), (33, 643986), (38, 559251), (42, 505989), (54, 393547), (57, 372834), (63, 337326), (66, 321993), (77, 275994), (99, 214662), (114, 186417), (126, 168663), (133, 159786), (154, 137997), (171, 124278), (189, 112442), (198, 107331), (209, 101682), (231, 91998), (266, 79893), (269, 79002), (297, 71554), (342, 62139), (378, 56221), (399, 53262), (418, 50841), (462, 45999), (513, 41426), (538, 39501), (594, 35777), (627, 33894), (693, 30666), (798, 26631), (807, 26334), (1026, 20713), (1197, 17754), (1254, 16947), (1386, 15333), (1463, 14526), (1614, 13167), (1881, 11298), (1883, 11286), (2079, 10222), (2394, 8877), (2421, 8778), (2926, 7263), (2959, 7182), (3591, 5918), (3762, 5649), (3766, 5643), (4158, 5111), (4389, 4842)]