21320516

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{953}}^1$

素因数の和:1028

約数の個数: 48

約数和(自身を含む): 46158336

約数和(自身を除く): 24837820

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 47, 68, 94, 119, 188, 238, 329, 476, 658, 799, 953, 1316, 1598, 1906, 3196, 3812, 5593, 6671, 11186, 13342, 16201, 22372, 26684, 32402, 44791, 64804, 89582, 113407, 179164, 226814, 313537, 453628, 627074, 761447, 1254148, 1522894, 3045788, 5330129, 10660258, 21320516]

約数ペア:

[(1, 21320516), (2, 10660258), (4, 5330129), (7, 3045788), (14, 1522894), (17, 1254148), (28, 761447), (34, 627074), (47, 453628), (68, 313537), (94, 226814), (119, 179164), (188, 113407), (238, 89582), (329, 64804), (476, 44791), (658, 32402), (799, 26684), (953, 22372), (1316, 16201), (1598, 13342), (1906, 11186), (3196, 6671), (3812, 5593)]