81745860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{107}}^2$

素因数の和:250

約数の個数: 144

約数和(自身を含む): 279586944

約数和(自身を除く): 197841084

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 51, 60, 68, 70, 84, 85, 102, 105, 107, 119, 140, 170, 204, 210, 214, 238, 255, 321, 340, 357, 420, 428, 476, 510, 535, 595, 642, 714, 749, 1020, 1070, 1190, 1284, 1428, 1498, 1605, 1785, 1819, 2140, 2247, 2380, 2996, 3210, 3570, 3638, 3745, 4494, 5457, 6420, 7140, 7276, 7490, 8988, 9095, 10914, 11235, 11449, 12733, 14980, 18190, 21828, 22470, 22898, 25466, 27285, 34347, 36380, 38199, 44940, 45796, 50932, 54570, 57245, 63665, 68694, 76398, 80143, 109140, 114490, 127330, 137388, 152796, 160286, 171735, 190995, 194633, 228980, 240429, 254660, 320572, 343470, 381990, 389266, 400715, 480858, 583899, 686940, 763980, 778532, 801430, 961716, 973165, 1167798, 1202145, 1362431, 1602860, 1946330, 2335596, 2404290, 2724862, 2919495, 3892660, 4087293, 4808580, 5449724, 5838990, 6812155, 8174586, 11677980, 13624310, 16349172, 20436465, 27248620, 40872930, 81745860]

約数ペア:

[(1, 81745860), (2, 40872930), (3, 27248620), (4, 20436465), (5, 16349172), (6, 13624310), (7, 11677980), (10, 8174586), (12, 6812155), (14, 5838990), (15, 5449724), (17, 4808580), (20, 4087293), (21, 3892660), (28, 2919495), (30, 2724862), (34, 2404290), (35, 2335596), (42, 1946330), (51, 1602860), (60, 1362431), (68, 1202145), (70, 1167798), (84, 973165), (85, 961716), (102, 801430), (105, 778532), (107, 763980), (119, 686940), (140, 583899), (170, 480858), (204, 400715), (210, 389266), (214, 381990), (238, 343470), (255, 320572), (321, 254660), (340, 240429), (357, 228980), (420, 194633), (428, 190995), (476, 171735), (510, 160286), (535, 152796), (595, 137388), (642, 127330), (714, 114490), (749, 109140), (1020, 80143), (1070, 76398), (1190, 68694), (1284, 63665), (1428, 57245), (1498, 54570), (1605, 50932), (1785, 45796), (1819, 44940), (2140, 38199), (2247, 36380), (2380, 34347), (2996, 27285), (3210, 25466), (3570, 22898), (3638, 22470), (3745, 21828), (4494, 18190), (5457, 14980), (6420, 12733), (7140, 11449), (7276, 11235), (7490, 10914), (8988, 9095)]