208560560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6469}}^1$

素因数の和:6526

約数の個数: 80

約数和(自身を含む): 539132160

約数和(自身を除く): 330571600

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 6469, 8060, 12938, 16120, 25876, 32240, 32345, 51752, 64690, 84097, 103504, 129380, 168194, 200539, 258760, 336388, 401078, 420485, 517520, 672776, 802156, 840970, 1002695, 1345552, 1604312, 1681940, 2005390, 2607007, 3208624, 3363880, 4010780, 5214014, 6727760, 8021560, 10428028, 13035035, 16043120, 20856056, 26070070, 41712112, 52140140, 104280280, 208560560]

約数ペア:

[(1, 208560560), (2, 104280280), (4, 52140140), (5, 41712112), (8, 26070070), (10, 20856056), (13, 16043120), (16, 13035035), (20, 10428028), (26, 8021560), (31, 6727760), (40, 5214014), (52, 4010780), (62, 3363880), (65, 3208624), (80, 2607007), (104, 2005390), (124, 1681940), (130, 1604312), (155, 1345552), (208, 1002695), (248, 840970), (260, 802156), (310, 672776), (403, 517520), (496, 420485), (520, 401078), (620, 336388), (806, 258760), (1040, 200539), (1240, 168194), (1612, 129380), (2015, 103504), (2480, 84097), (3224, 64690), (4030, 51752), (6448, 32345), (6469, 32240), (8060, 25876), (12938, 16120)]