21079040

素因数分解:

$2^{10}\times 5^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1$

素因数の和:227

約数の個数: 88

約数和(自身を含む): 53058240

約数和(自身を除く): 31979200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 179, 184, 230, 256, 320, 358, 368, 460, 512, 640, 716, 736, 895, 920, 1024, 1280, 1432, 1472, 1790, 1840, 2560, 2864, 2944, 3580, 3680, 4117, 5120, 5728, 5888, 7160, 7360, 8234, 11456, 11776, 14320, 14720, 16468, 20585, 22912, 23552, 28640, 29440, 32936, 41170, 45824, 57280, 58880, 65872, 82340, 91648, 114560, 117760, 131744, 164680, 183296, 229120, 263488, 329360, 458240, 526976, 658720, 916480, 1053952, 1317440, 2107904, 2634880, 4215808, 5269760, 10539520, 21079040]

約数ペア:

[(1, 21079040), (2, 10539520), (4, 5269760), (5, 4215808), (8, 2634880), (10, 2107904), (16, 1317440), (20, 1053952), (23, 916480), (32, 658720), (40, 526976), (46, 458240), (64, 329360), (80, 263488), (92, 229120), (115, 183296), (128, 164680), (160, 131744), (179, 117760), (184, 114560), (230, 91648), (256, 82340), (320, 65872), (358, 58880), (368, 57280), (460, 45824), (512, 41170), (640, 32936), (716, 29440), (736, 28640), (895, 23552), (920, 22912), (1024, 20585), (1280, 16468), (1432, 14720), (1472, 14320), (1790, 11776), (1840, 11456), (2560, 8234), (2864, 7360), (2944, 7160), (3580, 5888), (3680, 5728), (4117, 5120)]