20625480

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:140

約数の個数: 192

約数和(自身を含む): 72783360

約数和(自身を除く): 52157880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 36, 40, 45, 46, 47, 53, 60, 69, 72, 90, 92, 94, 106, 115, 120, 138, 141, 159, 180, 184, 188, 207, 212, 230, 235, 265, 276, 282, 318, 345, 360, 376, 414, 423, 424, 460, 470, 477, 530, 552, 564, 636, 690, 705, 795, 828, 846, 920, 940, 954, 1035, 1060, 1081, 1128, 1219, 1272, 1380, 1410, 1590, 1656, 1692, 1880, 1908, 2070, 2115, 2120, 2162, 2385, 2438, 2491, 2760, 2820, 3180, 3243, 3384, 3657, 3816, 4140, 4230, 4324, 4770, 4876, 4982, 5405, 5640, 6095, 6360, 6486, 7314, 7473, 8280, 8460, 8648, 9540, 9729, 9752, 9964, 10810, 10971, 12190, 12455, 12972, 14628, 14946, 16215, 16920, 18285, 19080, 19458, 19928, 21620, 21942, 22419, 24380, 24910, 25944, 29256, 29892, 32430, 36570, 37365, 38916, 43240, 43884, 44838, 48645, 48760, 49820, 54855, 57293, 59784, 64860, 73140, 74730, 77832, 87768, 89676, 97290, 99640, 109710, 112095, 114586, 129720, 146280, 149460, 171879, 179352, 194580, 219420, 224190, 229172, 286465, 298920, 343758, 389160, 438840, 448380, 458344, 515637, 572930, 687516, 859395, 896760, 1031274, 1145860, 1375032, 1718790, 2062548, 2291720, 2578185, 3437580, 4125096, 5156370, 6875160, 10312740, 20625480]

約数ペア:

[(1, 20625480), (2, 10312740), (3, 6875160), (4, 5156370), (5, 4125096), (6, 3437580), (8, 2578185), (9, 2291720), (10, 2062548), (12, 1718790), (15, 1375032), (18, 1145860), (20, 1031274), (23, 896760), (24, 859395), (30, 687516), (36, 572930), (40, 515637), (45, 458344), (46, 448380), (47, 438840), (53, 389160), (60, 343758), (69, 298920), (72, 286465), (90, 229172), (92, 224190), (94, 219420), (106, 194580), (115, 179352), (120, 171879), (138, 149460), (141, 146280), (159, 129720), (180, 114586), (184, 112095), (188, 109710), (207, 99640), (212, 97290), (230, 89676), (235, 87768), (265, 77832), (276, 74730), (282, 73140), (318, 64860), (345, 59784), (360, 57293), (376, 54855), (414, 49820), (423, 48760), (424, 48645), (460, 44838), (470, 43884), (477, 43240), (530, 38916), (552, 37365), (564, 36570), (636, 32430), (690, 29892), (705, 29256), (795, 25944), (828, 24910), (846, 24380), (920, 22419), (940, 21942), (954, 21620), (1035, 19928), (1060, 19458), (1081, 19080), (1128, 18285), (1219, 16920), (1272, 16215), (1380, 14946), (1410, 14628), (1590, 12972), (1656, 12455), (1692, 12190), (1880, 10971), (1908, 10810), (2070, 9964), (2115, 9752), (2120, 9729), (2162, 9540), (2385, 8648), (2438, 8460), (2491, 8280), (2760, 7473), (2820, 7314), (3180, 6486), (3243, 6360), (3384, 6095), (3657, 5640), (3816, 5405), (4140, 4982), (4230, 4876), (4324, 4770)]