21299456

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 46603200

約数和(自身を除く): 25303744

約数列:

[1, 2, 4, 8, 16, 19, 29, 32, 38, 58, 64, 76, 116, 128, 151, 152, 232, 256, 302, 304, 464, 551, 604, 608, 928, 1102, 1208, 1216, 1856, 2204, 2416, 2432, 2869, 3712, 4379, 4408, 4832, 4864, 5738, 7424, 8758, 8816, 9664, 11476, 17516, 17632, 19328, 22952, 35032, 35264, 38656, 45904, 70064, 70528, 83201, 91808, 140128, 141056, 166402, 183616, 280256, 332804, 367232, 560512, 665608, 734464, 1121024, 1331216, 2662432, 5324864, 10649728, 21299456]

約数ペア:

[(1, 21299456), (2, 10649728), (4, 5324864), (8, 2662432), (16, 1331216), (19, 1121024), (29, 734464), (32, 665608), (38, 560512), (58, 367232), (64, 332804), (76, 280256), (116, 183616), (128, 166402), (151, 141056), (152, 140128), (232, 91808), (256, 83201), (302, 70528), (304, 70064), (464, 45904), (551, 38656), (604, 35264), (608, 35032), (928, 22952), (1102, 19328), (1208, 17632), (1216, 17516), (1856, 11476), (2204, 9664), (2416, 8816), (2432, 8758), (2869, 7424), (3712, 5738), (4379, 4864), (4408, 4832)]