20671680

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{353}}^1$

素因数の和:434

約数の個数: 112

約数和(自身を含む): 66897504

約数和(自身を除く): 46225824

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 61, 64, 80, 96, 120, 122, 160, 183, 192, 240, 244, 305, 320, 353, 366, 480, 488, 610, 706, 732, 915, 960, 976, 1059, 1220, 1412, 1464, 1765, 1830, 1952, 2118, 2440, 2824, 2928, 3530, 3660, 3904, 4236, 4880, 5295, 5648, 5856, 7060, 7320, 8472, 9760, 10590, 11296, 11712, 14120, 14640, 16944, 19520, 21180, 21533, 22592, 28240, 29280, 33888, 42360, 43066, 56480, 58560, 64599, 67776, 84720, 86132, 107665, 112960, 129198, 169440, 172264, 215330, 258396, 322995, 338880, 344528, 430660, 516792, 645990, 689056, 861320, 1033584, 1291980, 1378112, 1722640, 2067168, 2583960, 3445280, 4134336, 5167920, 6890560, 10335840, 20671680]

約数ペア:

[(1, 20671680), (2, 10335840), (3, 6890560), (4, 5167920), (5, 4134336), (6, 3445280), (8, 2583960), (10, 2067168), (12, 1722640), (15, 1378112), (16, 1291980), (20, 1033584), (24, 861320), (30, 689056), (32, 645990), (40, 516792), (48, 430660), (60, 344528), (61, 338880), (64, 322995), (80, 258396), (96, 215330), (120, 172264), (122, 169440), (160, 129198), (183, 112960), (192, 107665), (240, 86132), (244, 84720), (305, 67776), (320, 64599), (353, 58560), (366, 56480), (480, 43066), (488, 42360), (610, 33888), (706, 29280), (732, 28240), (915, 22592), (960, 21533), (976, 21180), (1059, 19520), (1220, 16944), (1412, 14640), (1464, 14120), (1765, 11712), (1830, 11296), (1952, 10590), (2118, 9760), (2440, 8472), (2824, 7320), (2928, 7060), (3530, 5856), (3660, 5648), (3904, 5295), (4236, 4880)]