19809280

素因数分解:

$2^{10}\times 5^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:151

約数の個数: 88

約数和(自身を含む): 49078872

約数和(自身を除く): 29269592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 73, 80, 106, 128, 146, 160, 212, 256, 265, 292, 320, 365, 424, 512, 530, 584, 640, 730, 848, 1024, 1060, 1168, 1280, 1460, 1696, 2120, 2336, 2560, 2920, 3392, 3869, 4240, 4672, 5120, 5840, 6784, 7738, 8480, 9344, 11680, 13568, 15476, 16960, 18688, 19345, 23360, 27136, 30952, 33920, 37376, 38690, 46720, 54272, 61904, 67840, 74752, 77380, 93440, 123808, 135680, 154760, 186880, 247616, 271360, 309520, 373760, 495232, 619040, 990464, 1238080, 1980928, 2476160, 3961856, 4952320, 9904640, 19809280]

約数ペア:

[(1, 19809280), (2, 9904640), (4, 4952320), (5, 3961856), (8, 2476160), (10, 1980928), (16, 1238080), (20, 990464), (32, 619040), (40, 495232), (53, 373760), (64, 309520), (73, 271360), (80, 247616), (106, 186880), (128, 154760), (146, 135680), (160, 123808), (212, 93440), (256, 77380), (265, 74752), (292, 67840), (320, 61904), (365, 54272), (424, 46720), (512, 38690), (530, 37376), (584, 33920), (640, 30952), (730, 27136), (848, 23360), (1024, 19345), (1060, 18688), (1168, 16960), (1280, 15476), (1460, 13568), (1696, 11680), (2120, 9344), (2336, 8480), (2560, 7738), (2920, 6784), (3392, 5840), (3869, 5120), (4240, 4672)]