28471240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4421}}^1$

素因数の和:4462

約数の個数: 64

約数和(自身を含む): 76412160

約数和(自身を除く): 47940920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 4421, 6440, 8842, 17684, 22105, 30947, 35368, 44210, 61894, 88420, 101683, 123788, 154735, 176840, 203366, 247576, 309470, 406732, 508415, 618940, 711781, 813464, 1016830, 1237880, 1423562, 2033660, 2847124, 3558905, 4067320, 5694248, 7117810, 14235620, 28471240]

約数ペア:

[(1, 28471240), (2, 14235620), (4, 7117810), (5, 5694248), (7, 4067320), (8, 3558905), (10, 2847124), (14, 2033660), (20, 1423562), (23, 1237880), (28, 1016830), (35, 813464), (40, 711781), (46, 618940), (56, 508415), (70, 406732), (92, 309470), (115, 247576), (140, 203366), (161, 176840), (184, 154735), (230, 123788), (280, 101683), (322, 88420), (460, 61894), (644, 44210), (805, 35368), (920, 30947), (1288, 22105), (1610, 17684), (3220, 8842), (4421, 6440)]