19840590

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{409}}^1$

素因数の和:447

約数の個数: 144

約数和(自身を含む): 65622960

約数和(自身を除く): 45782370

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 18, 21, 22, 30, 33, 35, 42, 45, 49, 55, 63, 66, 70, 77, 90, 98, 99, 105, 110, 126, 147, 154, 165, 198, 210, 231, 245, 294, 315, 330, 385, 409, 441, 462, 490, 495, 539, 630, 693, 735, 770, 818, 882, 990, 1078, 1155, 1227, 1386, 1470, 1617, 2045, 2205, 2310, 2454, 2695, 2863, 3234, 3465, 3681, 4090, 4410, 4499, 4851, 5390, 5726, 6135, 6930, 7362, 8085, 8589, 8998, 9702, 12270, 13497, 14315, 16170, 17178, 18405, 20041, 22495, 24255, 25767, 26994, 28630, 31493, 36810, 40082, 40491, 42945, 44990, 48510, 51534, 60123, 62986, 67485, 80982, 85890, 94479, 100205, 120246, 128835, 134970, 157465, 180369, 188958, 200410, 202455, 220451, 257670, 283437, 300615, 314930, 360738, 404910, 440902, 472395, 566874, 601230, 661353, 901845, 944790, 1102255, 1322706, 1417185, 1803690, 1984059, 2204510, 2834370, 3306765, 3968118, 6613530, 9920295, 19840590]

約数ペア:

[(1, 19840590), (2, 9920295), (3, 6613530), (5, 3968118), (6, 3306765), (7, 2834370), (9, 2204510), (10, 1984059), (11, 1803690), (14, 1417185), (15, 1322706), (18, 1102255), (21, 944790), (22, 901845), (30, 661353), (33, 601230), (35, 566874), (42, 472395), (45, 440902), (49, 404910), (55, 360738), (63, 314930), (66, 300615), (70, 283437), (77, 257670), (90, 220451), (98, 202455), (99, 200410), (105, 188958), (110, 180369), (126, 157465), (147, 134970), (154, 128835), (165, 120246), (198, 100205), (210, 94479), (231, 85890), (245, 80982), (294, 67485), (315, 62986), (330, 60123), (385, 51534), (409, 48510), (441, 44990), (462, 42945), (490, 40491), (495, 40082), (539, 36810), (630, 31493), (693, 28630), (735, 26994), (770, 25767), (818, 24255), (882, 22495), (990, 20041), (1078, 18405), (1155, 17178), (1227, 16170), (1386, 14315), (1470, 13497), (1617, 12270), (2045, 9702), (2205, 8998), (2310, 8589), (2454, 8085), (2695, 7362), (2863, 6930), (3234, 6135), (3465, 5726), (3681, 5390), (4090, 4851), (4410, 4499)]