440803840

素因数分解:

$2^9\times 5^1\times {\mathrm{409}}^1\times {\mathrm{421}}^1$

素因数の和:853

約数の個数: 80

約数和(自身を含む): 1061996760

約数和(自身を除く): 621192920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 409, 421, 512, 640, 818, 842, 1280, 1636, 1684, 2045, 2105, 2560, 3272, 3368, 4090, 4210, 6544, 6736, 8180, 8420, 13088, 13472, 16360, 16840, 26176, 26944, 32720, 33680, 52352, 53888, 65440, 67360, 104704, 107776, 130880, 134720, 172189, 209408, 215552, 261760, 269440, 344378, 523520, 538880, 688756, 860945, 1047040, 1077760, 1377512, 1721890, 2755024, 3443780, 5510048, 6887560, 11020096, 13775120, 22040192, 27550240, 44080384, 55100480, 88160768, 110200960, 220401920, 440803840]

約数ペア:

[(1, 440803840), (2, 220401920), (4, 110200960), (5, 88160768), (8, 55100480), (10, 44080384), (16, 27550240), (20, 22040192), (32, 13775120), (40, 11020096), (64, 6887560), (80, 5510048), (128, 3443780), (160, 2755024), (256, 1721890), (320, 1377512), (409, 1077760), (421, 1047040), (512, 860945), (640, 688756), (818, 538880), (842, 523520), (1280, 344378), (1636, 269440), (1684, 261760), (2045, 215552), (2105, 209408), (2560, 172189), (3272, 134720), (3368, 130880), (4090, 107776), (4210, 104704), (6544, 67360), (6736, 65440), (8180, 53888), (8420, 52352), (13088, 33680), (13472, 32720), (16360, 26944), (16840, 26176)]