20828940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{151}}^1$

素因数の和:204

約数の個数: 144

約数和(自身を含む): 67925760

約数和(自身を除く): 47096820

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 19, 20, 22, 30, 33, 38, 44, 55, 57, 60, 66, 76, 95, 110, 114, 121, 132, 151, 165, 190, 209, 220, 228, 242, 285, 302, 330, 363, 380, 418, 453, 484, 570, 604, 605, 627, 660, 726, 755, 836, 906, 1045, 1140, 1210, 1254, 1452, 1510, 1661, 1812, 1815, 2090, 2265, 2299, 2420, 2508, 2869, 3020, 3135, 3322, 3630, 4180, 4530, 4598, 4983, 5738, 6270, 6644, 6897, 7260, 8305, 8607, 9060, 9196, 9966, 11476, 11495, 12540, 13794, 14345, 16610, 17214, 18271, 19932, 22990, 24915, 27588, 28690, 31559, 33220, 34428, 34485, 36542, 43035, 45980, 49830, 54813, 57380, 63118, 68970, 73084, 86070, 91355, 94677, 99660, 109626, 126236, 137940, 157795, 172140, 182710, 189354, 219252, 274065, 315590, 347149, 365420, 378708, 473385, 548130, 631180, 694298, 946770, 1041447, 1096260, 1388596, 1735745, 1893540, 2082894, 3471490, 4165788, 5207235, 6942980, 10414470, 20828940]

約数ペア:

[(1, 20828940), (2, 10414470), (3, 6942980), (4, 5207235), (5, 4165788), (6, 3471490), (10, 2082894), (11, 1893540), (12, 1735745), (15, 1388596), (19, 1096260), (20, 1041447), (22, 946770), (30, 694298), (33, 631180), (38, 548130), (44, 473385), (55, 378708), (57, 365420), (60, 347149), (66, 315590), (76, 274065), (95, 219252), (110, 189354), (114, 182710), (121, 172140), (132, 157795), (151, 137940), (165, 126236), (190, 109626), (209, 99660), (220, 94677), (228, 91355), (242, 86070), (285, 73084), (302, 68970), (330, 63118), (363, 57380), (380, 54813), (418, 49830), (453, 45980), (484, 43035), (570, 36542), (604, 34485), (605, 34428), (627, 33220), (660, 31559), (726, 28690), (755, 27588), (836, 24915), (906, 22990), (1045, 19932), (1140, 18271), (1210, 17214), (1254, 16610), (1452, 14345), (1510, 13794), (1661, 12540), (1812, 11495), (1815, 11476), (2090, 9966), (2265, 9196), (2299, 9060), (2420, 8607), (2508, 8305), (2869, 7260), (3020, 6897), (3135, 6644), (3322, 6270), (3630, 5738), (4180, 4983), (4530, 4598)]