21000584568

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{491}}^1\times {\mathrm{104831}}^1$

素因数の和:105348

約数の個数: 64

約数和(自身を含む): 55703531520

約数和(自身を除く): 34702946952

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204, 408, 491, 982, 1473, 1964, 2946, 3928, 5892, 8347, 11784, 16694, 25041, 33388, 50082, 66776, 100164, 104831, 200328, 209662, 314493, 419324, 628986, 838648, 1257972, 1782127, 2515944, 3564254, 5346381, 7128508, 10692762, 14257016, 21385524, 42771048, 51472021, 102944042, 154416063, 205888084, 308832126, 411776168, 617664252, 875024357, 1235328504, 1750048714, 2625073071, 3500097428, 5250146142, 7000194856, 10500292284, 21000584568]

約数ペア:

[(1, 21000584568), (2, 10500292284), (3, 7000194856), (4, 5250146142), (6, 3500097428), (8, 2625073071), (12, 1750048714), (17, 1235328504), (24, 875024357), (34, 617664252), (51, 411776168), (68, 308832126), (102, 205888084), (136, 154416063), (204, 102944042), (408, 51472021), (491, 42771048), (982, 21385524), (1473, 14257016), (1964, 10692762), (2946, 7128508), (3928, 5346381), (5892, 3564254), (8347, 2515944), (11784, 1782127), (16694, 1257972), (25041, 838648), (33388, 628986), (50082, 419324), (66776, 314493), (100164, 209662), (104831, 200328)]