1998500920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{48649}}^1$

素因数の和:48752

約数の個数: 64

約数和(自身を含む): 4903920000

約数和(自身を除く): 2905419080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 79, 104, 130, 158, 260, 316, 395, 520, 632, 790, 1027, 1580, 2054, 3160, 4108, 5135, 8216, 10270, 20540, 41080, 48649, 97298, 194596, 243245, 389192, 486490, 632437, 972980, 1264874, 1945960, 2529748, 3162185, 3843271, 5059496, 6324370, 7686542, 12648740, 15373084, 19216355, 25297480, 30746168, 38432710, 49962523, 76865420, 99925046, 153730840, 199850092, 249812615, 399700184, 499625230, 999250460, 1998500920]

約数ペア:

[(1, 1998500920), (2, 999250460), (4, 499625230), (5, 399700184), (8, 249812615), (10, 199850092), (13, 153730840), (20, 99925046), (26, 76865420), (40, 49962523), (52, 38432710), (65, 30746168), (79, 25297480), (104, 19216355), (130, 15373084), (158, 12648740), (260, 7686542), (316, 6324370), (395, 5059496), (520, 3843271), (632, 3162185), (790, 2529748), (1027, 1945960), (1580, 1264874), (2054, 972980), (3160, 632437), (4108, 486490), (5135, 389192), (8216, 243245), (10270, 194596), (20540, 97298), (41080, 48649)]