31978000

素因数分解:

$2^4\times 5^3\times {\mathrm{59}}^1\times {\mathrm{271}}^1$

素因数の和:353

約数の個数: 80

約数和(自身を含む): 78923520

約数和(自身を除く): 46945520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 59, 80, 100, 118, 125, 200, 236, 250, 271, 295, 400, 472, 500, 542, 590, 944, 1000, 1084, 1180, 1355, 1475, 2000, 2168, 2360, 2710, 2950, 4336, 4720, 5420, 5900, 6775, 7375, 10840, 11800, 13550, 14750, 15989, 21680, 23600, 27100, 29500, 31978, 33875, 54200, 59000, 63956, 67750, 79945, 108400, 118000, 127912, 135500, 159890, 255824, 271000, 319780, 399725, 542000, 639560, 799450, 1279120, 1598900, 1998625, 3197800, 3997250, 6395600, 7994500, 15989000, 31978000]

約数ペア:

[(1, 31978000), (2, 15989000), (4, 7994500), (5, 6395600), (8, 3997250), (10, 3197800), (16, 1998625), (20, 1598900), (25, 1279120), (40, 799450), (50, 639560), (59, 542000), (80, 399725), (100, 319780), (118, 271000), (125, 255824), (200, 159890), (236, 135500), (250, 127912), (271, 118000), (295, 108400), (400, 79945), (472, 67750), (500, 63956), (542, 59000), (590, 54200), (944, 33875), (1000, 31978), (1084, 29500), (1180, 27100), (1355, 23600), (1475, 21680), (2000, 15989), (2168, 14750), (2360, 13550), (2710, 11800), (2950, 10840), (4336, 7375), (4720, 6775), (5420, 5900)]