21686364

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1831}}^1$

素因数の和:1895

約数の個数: 72

約数和(自身を含む): 64017408

約数和(自身を除く): 42331044

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 47, 63, 84, 94, 126, 141, 188, 252, 282, 329, 423, 564, 658, 846, 987, 1316, 1692, 1831, 1974, 2961, 3662, 3948, 5493, 5922, 7324, 10986, 11844, 12817, 16479, 21972, 25634, 32958, 38451, 51268, 65916, 76902, 86057, 115353, 153804, 172114, 230706, 258171, 344228, 461412, 516342, 602399, 774513, 1032684, 1204798, 1549026, 1807197, 2409596, 3098052, 3614394, 5421591, 7228788, 10843182, 21686364]

約数ペア:

[(1, 21686364), (2, 10843182), (3, 7228788), (4, 5421591), (6, 3614394), (7, 3098052), (9, 2409596), (12, 1807197), (14, 1549026), (18, 1204798), (21, 1032684), (28, 774513), (36, 602399), (42, 516342), (47, 461412), (63, 344228), (84, 258171), (94, 230706), (126, 172114), (141, 153804), (188, 115353), (252, 86057), (282, 76902), (329, 65916), (423, 51268), (564, 38451), (658, 32958), (846, 25634), (987, 21972), (1316, 16479), (1692, 12817), (1831, 11844), (1974, 10986), (2961, 7324), (3662, 5922), (3948, 5493)]