281055920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{113329}}^1$

素因数の和:113373

約数の個数: 40

約数和(自身を含む): 674540160

約数和(自身を除く): 393484240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 113329, 226658, 453316, 566645, 906632, 1133290, 1813264, 2266580, 3513199, 4533160, 7026398, 9066320, 14052796, 17565995, 28105592, 35131990, 56211184, 70263980, 140527960, 281055920]

約数ペア:

[(1, 281055920), (2, 140527960), (4, 70263980), (5, 56211184), (8, 35131990), (10, 28105592), (16, 17565995), (20, 14052796), (31, 9066320), (40, 7026398), (62, 4533160), (80, 3513199), (124, 2266580), (155, 1813264), (248, 1133290), (310, 906632), (496, 566645), (620, 453316), (1240, 226658), (2480, 113329)]