18973864

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{389}}^1$

素因数の和:482

約数の個数: 64

約数和(自身を含む): 44553600

約数和(自身を除く): 25579736

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 67, 91, 104, 134, 182, 268, 364, 389, 469, 536, 728, 778, 871, 938, 1556, 1742, 1876, 2723, 3112, 3484, 3752, 5057, 5446, 6097, 6968, 10114, 10892, 12194, 20228, 21784, 24388, 26063, 35399, 40456, 48776, 52126, 70798, 104252, 141596, 182441, 208504, 283192, 338819, 364882, 677638, 729764, 1355276, 1459528, 2371733, 2710552, 4743466, 9486932, 18973864]

約数ペア:

[(1, 18973864), (2, 9486932), (4, 4743466), (7, 2710552), (8, 2371733), (13, 1459528), (14, 1355276), (26, 729764), (28, 677638), (52, 364882), (56, 338819), (67, 283192), (91, 208504), (104, 182441), (134, 141596), (182, 104252), (268, 70798), (364, 52126), (389, 48776), (469, 40456), (536, 35399), (728, 26063), (778, 24388), (871, 21784), (938, 20228), (1556, 12194), (1742, 10892), (1876, 10114), (2723, 6968), (3112, 6097), (3484, 5446), (3752, 5057)]