20321200

素因数分解:

$2^4\times 5^2\times {\mathrm{101}}^1\times {\mathrm{503}}^1$

素因数の和:622

約数の個数: 60

約数和(自身を含む): 49403088

約数和(自身を除く): 29081888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 101, 200, 202, 400, 404, 503, 505, 808, 1006, 1010, 1616, 2012, 2020, 2515, 2525, 4024, 4040, 5030, 5050, 8048, 8080, 10060, 10100, 12575, 20120, 20200, 25150, 40240, 40400, 50300, 50803, 100600, 101606, 201200, 203212, 254015, 406424, 508030, 812848, 1016060, 1270075, 2032120, 2540150, 4064240, 5080300, 10160600, 20321200]

約数ペア:

[(1, 20321200), (2, 10160600), (4, 5080300), (5, 4064240), (8, 2540150), (10, 2032120), (16, 1270075), (20, 1016060), (25, 812848), (40, 508030), (50, 406424), (80, 254015), (100, 203212), (101, 201200), (200, 101606), (202, 100600), (400, 50803), (404, 50300), (503, 40400), (505, 40240), (808, 25150), (1006, 20200), (1010, 20120), (1616, 12575), (2012, 10100), (2020, 10060), (2515, 8080), (2525, 8048), (4024, 5050), (4040, 5030)]