28040120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{22613}}^1$

素因数の和:22655

約数の個数: 32

約数和(自身を含む): 65128320

約数和(自身を除く): 37088200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 22613, 45226, 90452, 113065, 180904, 226130, 452260, 701003, 904520, 1402006, 2804012, 3505015, 5608024, 7010030, 14020060, 28040120]

約数ペア:

[(1, 28040120), (2, 14020060), (4, 7010030), (5, 5608024), (8, 3505015), (10, 2804012), (20, 1402006), (31, 904520), (40, 701003), (62, 452260), (124, 226130), (155, 180904), (248, 113065), (310, 90452), (620, 45226), (1240, 22613)]