388302280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{313147}}^1$

素因数の和:313189

約数の個数: 32

約数和(自身を含む): 901866240

約数和(自身を除く): 513563960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 313147, 626294, 1252588, 1565735, 2505176, 3131470, 6262940, 9707557, 12525880, 19415114, 38830228, 48537785, 77660456, 97075570, 194151140, 388302280]

約数ペア:

[(1, 388302280), (2, 194151140), (4, 97075570), (5, 77660456), (8, 48537785), (10, 38830228), (20, 19415114), (31, 12525880), (40, 9707557), (62, 6262940), (124, 3131470), (155, 2505176), (248, 1565735), (310, 1252588), (620, 626294), (1240, 313147)]