28671380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{383}}^1$

素因数の和:608

約数の個数: 48

約数和(自身を含む): 63866880

約数和(自身を除く): 35195500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 197, 380, 383, 394, 766, 788, 985, 1532, 1915, 1970, 3743, 3830, 3940, 7277, 7486, 7660, 14554, 14972, 18715, 29108, 36385, 37430, 72770, 74860, 75451, 145540, 150902, 301804, 377255, 754510, 1433569, 1509020, 2867138, 5734276, 7167845, 14335690, 28671380]

約数ペア:

[(1, 28671380), (2, 14335690), (4, 7167845), (5, 5734276), (10, 2867138), (19, 1509020), (20, 1433569), (38, 754510), (76, 377255), (95, 301804), (190, 150902), (197, 145540), (380, 75451), (383, 74860), (394, 72770), (766, 37430), (788, 36385), (985, 29108), (1532, 18715), (1915, 14972), (1970, 14554), (3743, 7660), (3830, 7486), (3940, 7277)]