21114238720

素因数分解:

$2^8\times 5^1\times {\mathrm{271}}^1\times {\mathrm{60869}}^1$

素因数の和:61161

約数の個数: 72

約数和(自身を含む): 50762658240

約数和(自身を除く): 29648419520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 271, 320, 542, 640, 1084, 1280, 1355, 2168, 2710, 4336, 5420, 8672, 10840, 17344, 21680, 34688, 43360, 60869, 69376, 86720, 121738, 173440, 243476, 304345, 346880, 486952, 608690, 973904, 1217380, 1947808, 2434760, 3895616, 4869520, 7791232, 9739040, 15582464, 16495499, 19478080, 32990998, 38956160, 65981996, 77912320, 82477495, 131963992, 164954990, 263927984, 329909980, 527855968, 659819960, 1055711936, 1319639920, 2111423872, 2639279840, 4222847744, 5278559680, 10557119360, 21114238720]

約数ペア:

[(1, 21114238720), (2, 10557119360), (4, 5278559680), (5, 4222847744), (8, 2639279840), (10, 2111423872), (16, 1319639920), (20, 1055711936), (32, 659819960), (40, 527855968), (64, 329909980), (80, 263927984), (128, 164954990), (160, 131963992), (256, 82477495), (271, 77912320), (320, 65981996), (542, 38956160), (640, 32990998), (1084, 19478080), (1280, 16495499), (1355, 15582464), (2168, 9739040), (2710, 7791232), (4336, 4869520), (5420, 3895616), (8672, 2434760), (10840, 1947808), (17344, 1217380), (21680, 973904), (34688, 608690), (43360, 486952), (60869, 346880), (69376, 304345), (86720, 243476), (121738, 173440)]