19701616

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:230

約数の個数: 80

約数和(自身を含む): 45139968

約数和(自身を除く): 25438352

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 31, 44, 46, 62, 88, 92, 124, 157, 176, 184, 248, 253, 314, 341, 368, 496, 506, 628, 682, 713, 1012, 1256, 1364, 1426, 1727, 2024, 2512, 2728, 2852, 3454, 3611, 4048, 4867, 5456, 5704, 6908, 7222, 7843, 9734, 11408, 13816, 14444, 15686, 19468, 27632, 28888, 31372, 38936, 39721, 53537, 57776, 62744, 77872, 79442, 107074, 111941, 125488, 158884, 214148, 223882, 317768, 428296, 447764, 635536, 856592, 895528, 1231351, 1791056, 2462702, 4925404, 9850808, 19701616]

約数ペア:

[(1, 19701616), (2, 9850808), (4, 4925404), (8, 2462702), (11, 1791056), (16, 1231351), (22, 895528), (23, 856592), (31, 635536), (44, 447764), (46, 428296), (62, 317768), (88, 223882), (92, 214148), (124, 158884), (157, 125488), (176, 111941), (184, 107074), (248, 79442), (253, 77872), (314, 62744), (341, 57776), (368, 53537), (496, 39721), (506, 38936), (628, 31372), (682, 28888), (713, 27632), (1012, 19468), (1256, 15686), (1364, 14444), (1426, 13816), (1727, 11408), (2024, 9734), (2512, 7843), (2728, 7222), (2852, 6908), (3454, 5704), (3611, 5456), (4048, 4867)]