28687568

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:125

約数の個数: 160

約数和(自身を含む): 77495040

約数和(自身を除く): 48807472

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 17, 19, 26, 28, 34, 38, 52, 56, 61, 68, 76, 91, 104, 112, 119, 122, 133, 136, 152, 182, 208, 221, 238, 244, 247, 266, 272, 304, 323, 364, 427, 442, 476, 488, 494, 532, 646, 728, 793, 854, 884, 952, 976, 988, 1037, 1064, 1159, 1292, 1456, 1547, 1586, 1708, 1729, 1768, 1904, 1976, 2074, 2128, 2261, 2318, 2584, 3094, 3172, 3416, 3458, 3536, 3952, 4148, 4199, 4522, 4636, 5168, 5551, 6188, 6344, 6832, 6916, 7259, 8113, 8296, 8398, 9044, 9272, 11102, 12376, 12688, 13481, 13832, 14518, 15067, 16226, 16592, 16796, 18088, 18544, 19703, 22204, 24752, 26962, 27664, 29036, 29393, 30134, 32452, 33592, 36176, 39406, 44408, 53924, 58072, 58786, 60268, 64904, 67184, 78812, 88816, 94367, 105469, 107848, 116144, 117572, 120536, 129808, 137921, 157624, 188734, 210938, 215696, 235144, 241072, 256139, 275842, 315248, 377468, 421876, 470288, 512278, 551684, 754936, 843752, 1024556, 1103368, 1509872, 1687504, 1792973, 2049112, 2206736, 3585946, 4098224, 7171892, 14343784, 28687568]

約数ペア:

[(1, 28687568), (2, 14343784), (4, 7171892), (7, 4098224), (8, 3585946), (13, 2206736), (14, 2049112), (16, 1792973), (17, 1687504), (19, 1509872), (26, 1103368), (28, 1024556), (34, 843752), (38, 754936), (52, 551684), (56, 512278), (61, 470288), (68, 421876), (76, 377468), (91, 315248), (104, 275842), (112, 256139), (119, 241072), (122, 235144), (133, 215696), (136, 210938), (152, 188734), (182, 157624), (208, 137921), (221, 129808), (238, 120536), (244, 117572), (247, 116144), (266, 107848), (272, 105469), (304, 94367), (323, 88816), (364, 78812), (427, 67184), (442, 64904), (476, 60268), (488, 58786), (494, 58072), (532, 53924), (646, 44408), (728, 39406), (793, 36176), (854, 33592), (884, 32452), (952, 30134), (976, 29393), (988, 29036), (1037, 27664), (1064, 26962), (1159, 24752), (1292, 22204), (1456, 19703), (1547, 18544), (1586, 18088), (1708, 16796), (1729, 16592), (1768, 16226), (1904, 15067), (1976, 14518), (2074, 13832), (2128, 13481), (2261, 12688), (2318, 12376), (2584, 11102), (3094, 9272), (3172, 9044), (3416, 8398), (3458, 8296), (3536, 8113), (3952, 7259), (4148, 6916), (4199, 6832), (4522, 6344), (4636, 6188), (5168, 5551)]