123451780

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{47119}}^1$

素因数の和:47259

約数の個数: 24

約数和(自身を含む): 261233280

約数和(自身を除く): 137781500

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 47119, 94238, 188476, 235595, 471190, 942380, 6172589, 12345178, 24690356, 30862945, 61725890, 123451780]

約数ペア:

[(1, 123451780), (2, 61725890), (4, 30862945), (5, 24690356), (10, 12345178), (20, 6172589), (131, 942380), (262, 471190), (524, 235595), (655, 188476), (1310, 94238), (2620, 47119)]