28497920

素因数分解:

$2^{11}\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1$

素因数の和:72

約数の個数: 144

約数和(自身を含む): 78427440

約数和(自身を除く): 49929520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 32, 40, 44, 46, 55, 64, 80, 88, 92, 110, 115, 121, 128, 160, 176, 184, 220, 230, 242, 253, 256, 320, 352, 368, 440, 460, 484, 506, 512, 605, 640, 704, 736, 880, 920, 968, 1012, 1024, 1210, 1265, 1280, 1408, 1472, 1760, 1840, 1936, 2024, 2048, 2420, 2530, 2560, 2783, 2816, 2944, 3520, 3680, 3872, 4048, 4840, 5060, 5120, 5566, 5632, 5888, 7040, 7360, 7744, 8096, 9680, 10120, 10240, 11132, 11264, 11776, 13915, 14080, 14720, 15488, 16192, 19360, 20240, 22264, 22528, 23552, 27830, 28160, 29440, 30976, 32384, 38720, 40480, 44528, 47104, 55660, 56320, 58880, 61952, 64768, 77440, 80960, 89056, 111320, 112640, 117760, 123904, 129536, 154880, 161920, 178112, 222640, 235520, 247808, 259072, 309760, 323840, 356224, 445280, 518144, 619520, 647680, 712448, 890560, 1239040, 1295360, 1424896, 1781120, 2590720, 2849792, 3562240, 5699584, 7124480, 14248960, 28497920]

約数ペア:

[(1, 28497920), (2, 14248960), (4, 7124480), (5, 5699584), (8, 3562240), (10, 2849792), (11, 2590720), (16, 1781120), (20, 1424896), (22, 1295360), (23, 1239040), (32, 890560), (40, 712448), (44, 647680), (46, 619520), (55, 518144), (64, 445280), (80, 356224), (88, 323840), (92, 309760), (110, 259072), (115, 247808), (121, 235520), (128, 222640), (160, 178112), (176, 161920), (184, 154880), (220, 129536), (230, 123904), (242, 117760), (253, 112640), (256, 111320), (320, 89056), (352, 80960), (368, 77440), (440, 64768), (460, 61952), (484, 58880), (506, 56320), (512, 55660), (605, 47104), (640, 44528), (704, 40480), (736, 38720), (880, 32384), (920, 30976), (968, 29440), (1012, 28160), (1024, 27830), (1210, 23552), (1265, 22528), (1280, 22264), (1408, 20240), (1472, 19360), (1760, 16192), (1840, 15488), (1936, 14720), (2024, 14080), (2048, 13915), (2420, 11776), (2530, 11264), (2560, 11132), (2783, 10240), (2816, 10120), (2944, 9680), (3520, 8096), (3680, 7744), (3872, 7360), (4048, 7040), (4840, 5888), (5060, 5632), (5120, 5566)]