253720120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{204613}}^1$

素因数の和:204655

約数の個数: 32

約数和(自身を含む): 589288320

約数和(自身を除く): 335568200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 204613, 409226, 818452, 1023065, 1636904, 2046130, 4092260, 6343003, 8184520, 12686006, 25372012, 31715015, 50744024, 63430030, 126860060, 253720120]

約数ペア:

[(1, 253720120), (2, 126860060), (4, 63430030), (5, 50744024), (8, 31715015), (10, 25372012), (20, 12686006), (31, 8184520), (40, 6343003), (62, 4092260), (124, 2046130), (155, 1636904), (248, 1023065), (310, 818452), (620, 409226), (1240, 204613)]