28127660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{197}}^1$

素因数の和:287

約数の個数: 72

約数和(自身を含む): 66361680

約数和(自身を除く): 38234020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 59, 110, 118, 121, 197, 220, 236, 242, 295, 394, 484, 590, 605, 649, 788, 985, 1180, 1210, 1298, 1970, 2167, 2420, 2596, 3245, 3940, 4334, 6490, 7139, 8668, 10835, 11623, 12980, 14278, 21670, 23246, 23837, 28556, 35695, 43340, 46492, 47674, 58115, 71390, 95348, 116230, 119185, 127853, 142780, 232460, 238370, 255706, 476740, 511412, 639265, 1278530, 1406383, 2557060, 2812766, 5625532, 7031915, 14063830, 28127660]

約数ペア:

[(1, 28127660), (2, 14063830), (4, 7031915), (5, 5625532), (10, 2812766), (11, 2557060), (20, 1406383), (22, 1278530), (44, 639265), (55, 511412), (59, 476740), (110, 255706), (118, 238370), (121, 232460), (197, 142780), (220, 127853), (236, 119185), (242, 116230), (295, 95348), (394, 71390), (484, 58115), (590, 47674), (605, 46492), (649, 43340), (788, 35695), (985, 28556), (1180, 23837), (1210, 23246), (1298, 21670), (1970, 14278), (2167, 12980), (2420, 11623), (2596, 10835), (3245, 8668), (3940, 7139), (4334, 6490)]