21295428

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1213}}^1$

素因数の和:1257

約数の個数: 96

約数和(自身を含む): 65264640

約数和(自身を除く): 43969212

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 19, 21, 22, 28, 33, 38, 42, 44, 57, 66, 76, 77, 84, 114, 132, 133, 154, 209, 228, 231, 266, 308, 399, 418, 462, 532, 627, 798, 836, 924, 1213, 1254, 1463, 1596, 2426, 2508, 2926, 3639, 4389, 4852, 5852, 7278, 8491, 8778, 13343, 14556, 16982, 17556, 23047, 25473, 26686, 33964, 40029, 46094, 50946, 53372, 69141, 80058, 92188, 93401, 101892, 138282, 160116, 161329, 186802, 253517, 276564, 280203, 322658, 373604, 483987, 507034, 560406, 645316, 760551, 967974, 1014068, 1120812, 1521102, 1774619, 1935948, 3042204, 3549238, 5323857, 7098476, 10647714, 21295428]

約数ペア:

[(1, 21295428), (2, 10647714), (3, 7098476), (4, 5323857), (6, 3549238), (7, 3042204), (11, 1935948), (12, 1774619), (14, 1521102), (19, 1120812), (21, 1014068), (22, 967974), (28, 760551), (33, 645316), (38, 560406), (42, 507034), (44, 483987), (57, 373604), (66, 322658), (76, 280203), (77, 276564), (84, 253517), (114, 186802), (132, 161329), (133, 160116), (154, 138282), (209, 101892), (228, 93401), (231, 92188), (266, 80058), (308, 69141), (399, 53372), (418, 50946), (462, 46094), (532, 40029), (627, 33964), (798, 26686), (836, 25473), (924, 23047), (1213, 17556), (1254, 16982), (1463, 14556), (1596, 13343), (2426, 8778), (2508, 8491), (2926, 7278), (3639, 5852), (4389, 4852)]