217449260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{4721}}^1$

素因数の和:4791

約数の個数: 72

約数和(自身を含む): 542614464

約数和(自身を除く): 325165204

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 49, 70, 94, 98, 140, 188, 196, 235, 245, 329, 470, 490, 658, 940, 980, 1316, 1645, 2303, 3290, 4606, 4721, 6580, 9212, 9442, 11515, 18884, 23030, 23605, 33047, 46060, 47210, 66094, 94420, 132188, 165235, 221887, 231329, 330470, 443774, 462658, 660940, 887548, 925316, 1109435, 1156645, 1553209, 2218870, 2313290, 3106418, 4437740, 4626580, 6212836, 7766045, 10872463, 15532090, 21744926, 31064180, 43489852, 54362315, 108724630, 217449260]

約数ペア:

[(1, 217449260), (2, 108724630), (4, 54362315), (5, 43489852), (7, 31064180), (10, 21744926), (14, 15532090), (20, 10872463), (28, 7766045), (35, 6212836), (47, 4626580), (49, 4437740), (70, 3106418), (94, 2313290), (98, 2218870), (140, 1553209), (188, 1156645), (196, 1109435), (235, 925316), (245, 887548), (329, 660940), (470, 462658), (490, 443774), (658, 330470), (940, 231329), (980, 221887), (1316, 165235), (1645, 132188), (2303, 94420), (3290, 66094), (4606, 47210), (4721, 46060), (6580, 33047), (9212, 23605), (9442, 23030), (11515, 18884)]