129902720

素因数分解:

$2^7\times 5^1\times {\mathrm{202973}}^1$

素因数の和:202992

約数の個数: 32

約数和(自身を含む): 310550220

約数和(自身を除く): 180647500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 202973, 405946, 811892, 1014865, 1623784, 2029730, 3247568, 4059460, 6495136, 8118920, 12990272, 16237840, 25980544, 32475680, 64951360, 129902720]

約数ペア:

[(1, 129902720), (2, 64951360), (4, 32475680), (5, 25980544), (8, 16237840), (10, 12990272), (16, 8118920), (20, 6495136), (32, 4059460), (40, 3247568), (64, 2029730), (80, 1623784), (128, 1014865), (160, 811892), (320, 405946), (640, 202973)]