219824840

素因数分解:

$2^3\times 5^1\times {\mathrm{787}}^1\times {\mathrm{6983}}^1$

素因数の和:7781

約数の個数: 32

約数和(自身を含む): 495305280

約数和(自身を除く): 275480440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 787, 1574, 3148, 3935, 6296, 6983, 7870, 13966, 15740, 27932, 31480, 34915, 55864, 69830, 139660, 279320, 5495621, 10991242, 21982484, 27478105, 43964968, 54956210, 109912420, 219824840]

約数ペア:

[(1, 219824840), (2, 109912420), (4, 54956210), (5, 43964968), (8, 27478105), (10, 21982484), (20, 10991242), (40, 5495621), (787, 279320), (1574, 139660), (3148, 69830), (3935, 55864), (6296, 34915), (6983, 31480), (7870, 27932), (13966, 15740)]