878990120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1\times {\mathrm{2309}}^1$

素因数の和:2658

約数の個数: 64

約数和(自身を含む): 2049062400

約数和(自身を除く): 1170072280

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 307, 310, 614, 620, 1228, 1240, 1535, 2309, 2456, 3070, 4618, 6140, 9236, 9517, 11545, 12280, 18472, 19034, 23090, 38068, 46180, 47585, 71579, 76136, 92360, 95170, 143158, 190340, 286316, 357895, 380680, 572632, 708863, 715790, 1417726, 1431580, 2835452, 2863160, 3544315, 5670904, 7088630, 14177260, 21974753, 28354520, 43949506, 87899012, 109873765, 175798024, 219747530, 439495060, 878990120]

約数ペア:

[(1, 878990120), (2, 439495060), (4, 219747530), (5, 175798024), (8, 109873765), (10, 87899012), (20, 43949506), (31, 28354520), (40, 21974753), (62, 14177260), (124, 7088630), (155, 5670904), (248, 3544315), (307, 2863160), (310, 2835452), (614, 1431580), (620, 1417726), (1228, 715790), (1240, 708863), (1535, 572632), (2309, 380680), (2456, 357895), (3070, 286316), (4618, 190340), (6140, 143158), (9236, 95170), (9517, 92360), (11545, 76136), (12280, 71579), (18472, 47585), (19034, 46180), (23090, 38068)]