19962540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{449}}^1$

素因数の和:496

約数の個数: 144

約数和(自身を含む): 68796000

約数和(自身を除く): 48833460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 30, 36, 38, 39, 45, 52, 57, 60, 65, 76, 78, 90, 95, 114, 117, 130, 156, 171, 180, 190, 195, 228, 234, 247, 260, 285, 342, 380, 390, 449, 468, 494, 570, 585, 684, 741, 780, 855, 898, 988, 1140, 1170, 1235, 1347, 1482, 1710, 1796, 2223, 2245, 2340, 2470, 2694, 2964, 3420, 3705, 4041, 4446, 4490, 4940, 5388, 5837, 6735, 7410, 8082, 8531, 8892, 8980, 11115, 11674, 13470, 14820, 16164, 17062, 17511, 20205, 22230, 23348, 25593, 26940, 29185, 34124, 35022, 40410, 42655, 44460, 51186, 52533, 58370, 70044, 76779, 80820, 85310, 87555, 102372, 105066, 110903, 116740, 127965, 153558, 170620, 175110, 210132, 221806, 255930, 262665, 307116, 332709, 350220, 383895, 443612, 511860, 525330, 554515, 665418, 767790, 998127, 1050660, 1109030, 1330836, 1535580, 1663545, 1996254, 2218060, 3327090, 3992508, 4990635, 6654180, 9981270, 19962540]

約数ペア:

[(1, 19962540), (2, 9981270), (3, 6654180), (4, 4990635), (5, 3992508), (6, 3327090), (9, 2218060), (10, 1996254), (12, 1663545), (13, 1535580), (15, 1330836), (18, 1109030), (19, 1050660), (20, 998127), (26, 767790), (30, 665418), (36, 554515), (38, 525330), (39, 511860), (45, 443612), (52, 383895), (57, 350220), (60, 332709), (65, 307116), (76, 262665), (78, 255930), (90, 221806), (95, 210132), (114, 175110), (117, 170620), (130, 153558), (156, 127965), (171, 116740), (180, 110903), (190, 105066), (195, 102372), (228, 87555), (234, 85310), (247, 80820), (260, 76779), (285, 70044), (342, 58370), (380, 52533), (390, 51186), (449, 44460), (468, 42655), (494, 40410), (570, 35022), (585, 34124), (684, 29185), (741, 26940), (780, 25593), (855, 23348), (898, 22230), (988, 20205), (1140, 17511), (1170, 17062), (1235, 16164), (1347, 14820), (1482, 13470), (1710, 11674), (1796, 11115), (2223, 8980), (2245, 8892), (2340, 8531), (2470, 8082), (2694, 7410), (2964, 6735), (3420, 5837), (3705, 5388), (4041, 4940), (4446, 4490)]