81441920

素因数分解:

$2^7\times 5^1\times 7^4\times {\mathrm{53}}^1$

素因数の和:100

約数の個数: 160

約数和(自身を含む): 231418620

約数和(自身を除く): 149976700

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 53, 56, 64, 70, 80, 98, 106, 112, 128, 140, 160, 196, 212, 224, 245, 265, 280, 320, 343, 371, 392, 424, 448, 490, 530, 560, 640, 686, 742, 784, 848, 896, 980, 1060, 1120, 1372, 1484, 1568, 1696, 1715, 1855, 1960, 2120, 2240, 2401, 2597, 2744, 2968, 3136, 3392, 3430, 3710, 3920, 4240, 4480, 4802, 5194, 5488, 5936, 6272, 6784, 6860, 7420, 7840, 8480, 9604, 10388, 10976, 11872, 12005, 12985, 13720, 14840, 15680, 16960, 18179, 19208, 20776, 21952, 23744, 24010, 25970, 27440, 29680, 31360, 33920, 36358, 38416, 41552, 43904, 47488, 48020, 51940, 54880, 59360, 72716, 76832, 83104, 90895, 96040, 103880, 109760, 118720, 127253, 145432, 153664, 166208, 181790, 192080, 207760, 219520, 237440, 254506, 290864, 307328, 332416, 363580, 384160, 415520, 509012, 581728, 636265, 727160, 768320, 831040, 1018024, 1163456, 1272530, 1454320, 1536640, 1662080, 2036048, 2326912, 2545060, 2908640, 4072096, 5090120, 5817280, 8144192, 10180240, 11634560, 16288384, 20360480, 40720960, 81441920]

約数ペア:

[(1, 81441920), (2, 40720960), (4, 20360480), (5, 16288384), (7, 11634560), (8, 10180240), (10, 8144192), (14, 5817280), (16, 5090120), (20, 4072096), (28, 2908640), (32, 2545060), (35, 2326912), (40, 2036048), (49, 1662080), (53, 1536640), (56, 1454320), (64, 1272530), (70, 1163456), (80, 1018024), (98, 831040), (106, 768320), (112, 727160), (128, 636265), (140, 581728), (160, 509012), (196, 415520), (212, 384160), (224, 363580), (245, 332416), (265, 307328), (280, 290864), (320, 254506), (343, 237440), (371, 219520), (392, 207760), (424, 192080), (448, 181790), (490, 166208), (530, 153664), (560, 145432), (640, 127253), (686, 118720), (742, 109760), (784, 103880), (848, 96040), (896, 90895), (980, 83104), (1060, 76832), (1120, 72716), (1372, 59360), (1484, 54880), (1568, 51940), (1696, 48020), (1715, 47488), (1855, 43904), (1960, 41552), (2120, 38416), (2240, 36358), (2401, 33920), (2597, 31360), (2744, 29680), (2968, 27440), (3136, 25970), (3392, 24010), (3430, 23744), (3710, 21952), (3920, 20776), (4240, 19208), (4480, 18179), (4802, 16960), (5194, 15680), (5488, 14840), (5936, 13720), (6272, 12985), (6784, 12005), (6860, 11872), (7420, 10976), (7840, 10388), (8480, 9604)]