21181184

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 46505088

約数和(自身を除く): 25323904

約数列:

[1, 2, 4, 8, 16, 17, 31, 32, 34, 62, 64, 68, 124, 128, 136, 157, 248, 256, 272, 314, 496, 527, 544, 628, 992, 1054, 1088, 1256, 1984, 2108, 2176, 2512, 2669, 3968, 4216, 4352, 4867, 5024, 5338, 7936, 8432, 9734, 10048, 10676, 16864, 19468, 20096, 21352, 33728, 38936, 40192, 42704, 67456, 77872, 82739, 85408, 134912, 155744, 165478, 170816, 311488, 330956, 341632, 622976, 661912, 683264, 1245952, 1323824, 2647648, 5295296, 10590592, 21181184]

約数ペア:

[(1, 21181184), (2, 10590592), (4, 5295296), (8, 2647648), (16, 1323824), (17, 1245952), (31, 683264), (32, 661912), (34, 622976), (62, 341632), (64, 330956), (68, 311488), (124, 170816), (128, 165478), (136, 155744), (157, 134912), (248, 85408), (256, 82739), (272, 77872), (314, 67456), (496, 42704), (527, 40192), (544, 38936), (628, 33728), (992, 21352), (1054, 20096), (1088, 19468), (1256, 16864), (1984, 10676), (2108, 10048), (2176, 9734), (2512, 8432), (2669, 7936), (3968, 5338), (4216, 5024), (4352, 4867)]