21153882

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:243

約数の個数: 64

約数和(自身を含む): 47775744

約数和(自身を除く): 26621862

約数列:

[1, 2, 3, 6, 17, 23, 34, 46, 51, 69, 71, 102, 127, 138, 142, 213, 254, 381, 391, 426, 762, 782, 1173, 1207, 1633, 2159, 2346, 2414, 2921, 3266, 3621, 4318, 4899, 5842, 6477, 7242, 8763, 9017, 9798, 12954, 17526, 18034, 27051, 27761, 49657, 54102, 55522, 83283, 99314, 148971, 153289, 166566, 207391, 297942, 306578, 414782, 459867, 622173, 919734, 1244346, 3525647, 7051294, 10576941, 21153882]

約数ペア:

[(1, 21153882), (2, 10576941), (3, 7051294), (6, 3525647), (17, 1244346), (23, 919734), (34, 622173), (46, 459867), (51, 414782), (69, 306578), (71, 297942), (102, 207391), (127, 166566), (138, 153289), (142, 148971), (213, 99314), (254, 83283), (381, 55522), (391, 54102), (426, 49657), (762, 27761), (782, 27051), (1173, 18034), (1207, 17526), (1633, 12954), (2159, 9798), (2346, 9017), (2414, 8763), (2921, 7242), (3266, 6477), (3621, 5842), (4318, 4899)]