1649840

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{503}}^1$

素因数の和:557

約数の個数: 40

約数和(自身を含む): 3937248

約数和(自身を除く): 2287408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 503, 656, 820, 1006, 1640, 2012, 2515, 3280, 4024, 5030, 8048, 10060, 20120, 20623, 40240, 41246, 82492, 103115, 164984, 206230, 329968, 412460, 824920, 1649840]

約数ペア:

[(1, 1649840), (2, 824920), (4, 412460), (5, 329968), (8, 206230), (10, 164984), (16, 103115), (20, 82492), (40, 41246), (41, 40240), (80, 20623), (82, 20120), (164, 10060), (205, 8048), (328, 5030), (410, 4024), (503, 3280), (656, 2515), (820, 2012), (1006, 1640)]