21078264

素因数分解:

$2^3\times 3^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{691}}^1$

素因数の和:772

約数の個数: 64

約数和(自身を含む): 55802880

約数和(自身を除く): 34724616

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 31, 41, 62, 82, 93, 123, 124, 164, 186, 246, 248, 328, 372, 492, 691, 744, 984, 1271, 1382, 2073, 2542, 2764, 3813, 4146, 5084, 5528, 7626, 8292, 10168, 15252, 16584, 21421, 28331, 30504, 42842, 56662, 64263, 84993, 85684, 113324, 128526, 169986, 171368, 226648, 257052, 339972, 514104, 679944, 878261, 1756522, 2634783, 3513044, 5269566, 7026088, 10539132, 21078264]

約数ペア:

[(1, 21078264), (2, 10539132), (3, 7026088), (4, 5269566), (6, 3513044), (8, 2634783), (12, 1756522), (24, 878261), (31, 679944), (41, 514104), (62, 339972), (82, 257052), (93, 226648), (123, 171368), (124, 169986), (164, 128526), (186, 113324), (246, 85684), (248, 84993), (328, 64263), (372, 56662), (492, 42842), (691, 30504), (744, 28331), (984, 21421), (1271, 16584), (1382, 15252), (2073, 10168), (2542, 8292), (2764, 7626), (3813, 5528), (4146, 5084)]