890295440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{654629}}^1$

素因数の和:654659

約数の個数: 40

約数和(自身を含む): 2191701240

約数和(自身を除く): 1301405800

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 654629, 1309258, 2618516, 3273145, 5237032, 6546290, 10474064, 11128693, 13092580, 22257386, 26185160, 44514772, 52370320, 55643465, 89029544, 111286930, 178059088, 222573860, 445147720, 890295440]

約数ペア:

[(1, 890295440), (2, 445147720), (4, 222573860), (5, 178059088), (8, 111286930), (10, 89029544), (16, 55643465), (17, 52370320), (20, 44514772), (34, 26185160), (40, 22257386), (68, 13092580), (80, 11128693), (85, 10474064), (136, 6546290), (170, 5237032), (272, 3273145), (340, 2618516), (680, 1309258), (1360, 654629)]