4978000

素因数分解:

$2^4\times 5^3\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:173

約数の個数: 80

約数和(自身を含む): 12767040

約数和(自身を除く): 7789040

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 125, 131, 152, 190, 200, 250, 262, 304, 380, 400, 475, 500, 524, 655, 760, 950, 1000, 1048, 1310, 1520, 1900, 2000, 2096, 2375, 2489, 2620, 3275, 3800, 4750, 4978, 5240, 6550, 7600, 9500, 9956, 10480, 12445, 13100, 16375, 19000, 19912, 24890, 26200, 32750, 38000, 39824, 49780, 52400, 62225, 65500, 99560, 124450, 131000, 199120, 248900, 262000, 311125, 497800, 622250, 995600, 1244500, 2489000, 4978000]

約数ペア:

[(1, 4978000), (2, 2489000), (4, 1244500), (5, 995600), (8, 622250), (10, 497800), (16, 311125), (19, 262000), (20, 248900), (25, 199120), (38, 131000), (40, 124450), (50, 99560), (76, 65500), (80, 62225), (95, 52400), (100, 49780), (125, 39824), (131, 38000), (152, 32750), (190, 26200), (200, 24890), (250, 19912), (262, 19000), (304, 16375), (380, 13100), (400, 12445), (475, 10480), (500, 9956), (524, 9500), (655, 7600), (760, 6550), (950, 5240), (1000, 4978), (1048, 4750), (1310, 3800), (1520, 3275), (1900, 2620), (2000, 2489), (2096, 2375)]