221645440

素因数分解:

$2^7\times 5^1\times {\mathrm{346321}}^1$

素因数の和:346340

約数の個数: 32

約数和(自身を含む): 529872660

約数和(自身を除く): 308227220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 346321, 692642, 1385284, 1731605, 2770568, 3463210, 5541136, 6926420, 11082272, 13852840, 22164544, 27705680, 44329088, 55411360, 110822720, 221645440]

約数ペア:

[(1, 221645440), (2, 110822720), (4, 55411360), (5, 44329088), (8, 27705680), (10, 22164544), (16, 13852840), (20, 11082272), (32, 6926420), (40, 5541136), (64, 3463210), (80, 2770568), (128, 1731605), (160, 1385284), (320, 692642), (640, 346321)]