19004895

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1$

素因数の和:71

約数の個数: 144

約数和(自身を含む): 45061920

約数和(自身を除く): 26057025

約数列:

[1, 3, 5, 7, 9, 13, 15, 17, 21, 27, 35, 39, 45, 49, 51, 63, 65, 85, 91, 105, 117, 119, 135, 147, 153, 169, 189, 195, 221, 245, 255, 273, 315, 351, 357, 441, 455, 459, 507, 585, 595, 637, 663, 735, 765, 819, 833, 845, 945, 1071, 1105, 1183, 1323, 1365, 1521, 1547, 1755, 1785, 1911, 1989, 2205, 2295, 2457, 2499, 2535, 2873, 3185, 3213, 3315, 3549, 4095, 4165, 4563, 4641, 5355, 5733, 5915, 5967, 6615, 7497, 7605, 7735, 8281, 8619, 9555, 9945, 10647, 10829, 12285, 12495, 13923, 14365, 16065, 17199, 17745, 20111, 22491, 22815, 23205, 24843, 25857, 28665, 29835, 31941, 32487, 37485, 41405, 41769, 43095, 53235, 54145, 60333, 69615, 74529, 77571, 85995, 97461, 100555, 112455, 124215, 129285, 140777, 159705, 162435, 180999, 208845, 223587, 292383, 301665, 372645, 387855, 422331, 487305, 542997, 703885, 904995, 1117935, 1266993, 1461915, 2111655, 2714985, 3800979, 6334965, 19004895]

約数ペア:

[(1, 19004895), (3, 6334965), (5, 3800979), (7, 2714985), (9, 2111655), (13, 1461915), (15, 1266993), (17, 1117935), (21, 904995), (27, 703885), (35, 542997), (39, 487305), (45, 422331), (49, 387855), (51, 372645), (63, 301665), (65, 292383), (85, 223587), (91, 208845), (105, 180999), (117, 162435), (119, 159705), (135, 140777), (147, 129285), (153, 124215), (169, 112455), (189, 100555), (195, 97461), (221, 85995), (245, 77571), (255, 74529), (273, 69615), (315, 60333), (351, 54145), (357, 53235), (441, 43095), (455, 41769), (459, 41405), (507, 37485), (585, 32487), (595, 31941), (637, 29835), (663, 28665), (735, 25857), (765, 24843), (819, 23205), (833, 22815), (845, 22491), (945, 20111), (1071, 17745), (1105, 17199), (1183, 16065), (1323, 14365), (1365, 13923), (1521, 12495), (1547, 12285), (1755, 10829), (1785, 10647), (1911, 9945), (1989, 9555), (2205, 8619), (2295, 8281), (2457, 7735), (2499, 7605), (2535, 7497), (2873, 6615), (3185, 5967), (3213, 5915), (3315, 5733), (3549, 5355), (4095, 4641), (4165, 4563)]