20689290

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:181

約数の個数: 128

約数和(自身を含む): 60192000

約数和(自身を除く): 39502710

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 27, 30, 37, 38, 45, 54, 57, 74, 90, 95, 109, 111, 114, 135, 171, 185, 190, 218, 222, 270, 285, 327, 333, 342, 370, 513, 545, 555, 570, 654, 666, 703, 855, 981, 999, 1026, 1090, 1110, 1406, 1635, 1665, 1710, 1962, 1998, 2071, 2109, 2565, 2943, 3270, 3330, 3515, 4033, 4142, 4218, 4905, 4995, 5130, 5886, 6213, 6327, 7030, 8066, 9810, 9990, 10355, 10545, 12099, 12426, 12654, 14715, 18639, 18981, 20165, 20710, 21090, 24198, 29430, 31065, 31635, 36297, 37278, 37962, 40330, 55917, 60495, 62130, 63270, 72594, 76627, 93195, 94905, 108891, 111834, 120990, 153254, 181485, 186390, 189810, 217782, 229881, 279585, 362970, 383135, 459762, 544455, 559170, 689643, 766270, 1088910, 1149405, 1379286, 2068929, 2298810, 3448215, 4137858, 6896430, 10344645, 20689290]

約数ペア:

[(1, 20689290), (2, 10344645), (3, 6896430), (5, 4137858), (6, 3448215), (9, 2298810), (10, 2068929), (15, 1379286), (18, 1149405), (19, 1088910), (27, 766270), (30, 689643), (37, 559170), (38, 544455), (45, 459762), (54, 383135), (57, 362970), (74, 279585), (90, 229881), (95, 217782), (109, 189810), (111, 186390), (114, 181485), (135, 153254), (171, 120990), (185, 111834), (190, 108891), (218, 94905), (222, 93195), (270, 76627), (285, 72594), (327, 63270), (333, 62130), (342, 60495), (370, 55917), (513, 40330), (545, 37962), (555, 37278), (570, 36297), (654, 31635), (666, 31065), (703, 29430), (855, 24198), (981, 21090), (999, 20710), (1026, 20165), (1090, 18981), (1110, 18639), (1406, 14715), (1635, 12654), (1665, 12426), (1710, 12099), (1962, 10545), (1998, 10355), (2071, 9990), (2109, 9810), (2565, 8066), (2943, 7030), (3270, 6327), (3330, 6213), (3515, 5886), (4033, 5130), (4142, 4995), (4218, 4905)]