21538088

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{281}}^1$

素因数の和:378

約数の個数: 64

約数和(自身を含む): 48323520

約数和(自身を除く): 26785432

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 67, 88, 104, 134, 143, 268, 281, 286, 536, 562, 572, 737, 871, 1124, 1144, 1474, 1742, 2248, 2948, 3091, 3484, 3653, 5896, 6182, 6968, 7306, 9581, 12364, 14612, 18827, 19162, 24728, 29224, 37654, 38324, 40183, 75308, 76648, 80366, 150616, 160732, 207097, 244751, 321464, 414194, 489502, 828388, 979004, 1656776, 1958008, 2692261, 5384522, 10769044, 21538088]

約数ペア:

[(1, 21538088), (2, 10769044), (4, 5384522), (8, 2692261), (11, 1958008), (13, 1656776), (22, 979004), (26, 828388), (44, 489502), (52, 414194), (67, 321464), (88, 244751), (104, 207097), (134, 160732), (143, 150616), (268, 80366), (281, 76648), (286, 75308), (536, 40183), (562, 38324), (572, 37654), (737, 29224), (871, 24728), (1124, 19162), (1144, 18827), (1474, 14612), (1742, 12364), (2248, 9581), (2948, 7306), (3091, 6968), (3484, 6182), (3653, 5896)]