19678860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:200

約数の個数: 144

約数和(自身を含む): 64864800

約数和(自身を除く): 45185940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 59, 60, 68, 85, 90, 102, 109, 118, 153, 170, 177, 180, 204, 218, 236, 255, 295, 306, 327, 340, 354, 436, 510, 531, 545, 590, 612, 654, 708, 765, 885, 981, 1003, 1020, 1062, 1090, 1180, 1308, 1530, 1635, 1770, 1853, 1962, 2006, 2124, 2180, 2655, 3009, 3060, 3270, 3540, 3706, 3924, 4012, 4905, 5015, 5310, 5559, 6018, 6431, 6540, 7412, 9027, 9265, 9810, 10030, 10620, 11118, 12036, 12862, 15045, 16677, 18054, 18530, 19293, 19620, 20060, 22236, 25724, 27795, 30090, 32155, 33354, 36108, 37060, 38586, 45135, 55590, 57879, 60180, 64310, 66708, 77172, 83385, 90270, 96465, 109327, 111180, 115758, 128620, 166770, 180540, 192930, 218654, 231516, 289395, 327981, 333540, 385860, 437308, 546635, 578790, 655962, 983943, 1093270, 1157580, 1311924, 1639905, 1967886, 2186540, 3279810, 3935772, 4919715, 6559620, 9839430, 19678860]

約数ペア:

[(1, 19678860), (2, 9839430), (3, 6559620), (4, 4919715), (5, 3935772), (6, 3279810), (9, 2186540), (10, 1967886), (12, 1639905), (15, 1311924), (17, 1157580), (18, 1093270), (20, 983943), (30, 655962), (34, 578790), (36, 546635), (45, 437308), (51, 385860), (59, 333540), (60, 327981), (68, 289395), (85, 231516), (90, 218654), (102, 192930), (109, 180540), (118, 166770), (153, 128620), (170, 115758), (177, 111180), (180, 109327), (204, 96465), (218, 90270), (236, 83385), (255, 77172), (295, 66708), (306, 64310), (327, 60180), (340, 57879), (354, 55590), (436, 45135), (510, 38586), (531, 37060), (545, 36108), (590, 33354), (612, 32155), (654, 30090), (708, 27795), (765, 25724), (885, 22236), (981, 20060), (1003, 19620), (1020, 19293), (1062, 18530), (1090, 18054), (1180, 16677), (1308, 15045), (1530, 12862), (1635, 12036), (1770, 11118), (1853, 10620), (1962, 10030), (2006, 9810), (2124, 9265), (2180, 9027), (2655, 7412), (3009, 6540), (3060, 6431), (3270, 6018), (3540, 5559), (3706, 5310), (3924, 5015), (4012, 4905)]