20155440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{613}}^1$

素因数の和:766

約数の個数: 80

約数和(自身を含む): 63040608

約数和(自身を除く): 42885168

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 137, 240, 274, 411, 548, 613, 685, 822, 1096, 1226, 1370, 1644, 1839, 2055, 2192, 2452, 2740, 3065, 3288, 3678, 4110, 4904, 5480, 6130, 6576, 7356, 8220, 9195, 9808, 10960, 12260, 14712, 16440, 18390, 24520, 29424, 32880, 36780, 49040, 73560, 83981, 147120, 167962, 251943, 335924, 419905, 503886, 671848, 839810, 1007772, 1259715, 1343696, 1679620, 2015544, 2519430, 3359240, 4031088, 5038860, 6718480, 10077720, 20155440]

約数ペア:

[(1, 20155440), (2, 10077720), (3, 6718480), (4, 5038860), (5, 4031088), (6, 3359240), (8, 2519430), (10, 2015544), (12, 1679620), (15, 1343696), (16, 1259715), (20, 1007772), (24, 839810), (30, 671848), (40, 503886), (48, 419905), (60, 335924), (80, 251943), (120, 167962), (137, 147120), (240, 83981), (274, 73560), (411, 49040), (548, 36780), (613, 32880), (685, 29424), (822, 24520), (1096, 18390), (1226, 16440), (1370, 14712), (1644, 12260), (1839, 10960), (2055, 9808), (2192, 9195), (2452, 8220), (2740, 7356), (3065, 6576), (3288, 6130), (3678, 5480), (4110, 4904)]