9778640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3943}}^1$

素因数の和:3987

約数の個数: 40

約数和(自身を含む): 23474688

約数和(自身を除く): 13696048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 3943, 7886, 15772, 19715, 31544, 39430, 63088, 78860, 122233, 157720, 244466, 315440, 488932, 611165, 977864, 1222330, 1955728, 2444660, 4889320, 9778640]

約数ペア:

[(1, 9778640), (2, 4889320), (4, 2444660), (5, 1955728), (8, 1222330), (10, 977864), (16, 611165), (20, 488932), (31, 315440), (40, 244466), (62, 157720), (80, 122233), (124, 78860), (155, 63088), (248, 39430), (310, 31544), (496, 19715), (620, 15772), (1240, 7886), (2480, 3943)]