19691355

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:156

約数の個数: 64

約数和(自身を含む): 35831808

約数和(自身を除く): 16140453

約数列:

[1, 3, 5, 15, 17, 31, 47, 51, 53, 85, 93, 141, 155, 159, 235, 255, 265, 465, 527, 705, 795, 799, 901, 1457, 1581, 1643, 2397, 2491, 2635, 2703, 3995, 4371, 4505, 4929, 7285, 7473, 7905, 8215, 11985, 12455, 13515, 21855, 24645, 24769, 27931, 37365, 42347, 74307, 77221, 83793, 123845, 127041, 139655, 211735, 231663, 371535, 386105, 418965, 635205, 1158315, 1312757, 3938271, 6563785, 19691355]

約数ペア:

[(1, 19691355), (3, 6563785), (5, 3938271), (15, 1312757), (17, 1158315), (31, 635205), (47, 418965), (51, 386105), (53, 371535), (85, 231663), (93, 211735), (141, 139655), (155, 127041), (159, 123845), (235, 83793), (255, 77221), (265, 74307), (465, 42347), (527, 37365), (705, 27931), (795, 24769), (799, 24645), (901, 21855), (1457, 13515), (1581, 12455), (1643, 11985), (2397, 8215), (2491, 7905), (2635, 7473), (2703, 7285), (3995, 4929), (4371, 4505)]