20738025

素因数分解:

$3^4\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1$

素因数の和:66

約数の個数: 180

約数和(自身を含む): 51313680

約数和(自身を除く): 30575655

約数列:

[1, 3, 5, 7, 9, 11, 15, 19, 21, 25, 27, 33, 35, 45, 49, 55, 57, 63, 75, 77, 81, 95, 99, 105, 133, 135, 147, 165, 171, 175, 189, 209, 225, 231, 245, 275, 285, 297, 315, 385, 399, 405, 441, 475, 495, 513, 525, 539, 567, 627, 665, 675, 693, 735, 825, 855, 891, 931, 945, 1045, 1155, 1197, 1225, 1323, 1425, 1463, 1485, 1539, 1575, 1617, 1881, 1925, 1995, 2025, 2079, 2205, 2475, 2565, 2695, 2793, 2835, 3135, 3325, 3465, 3591, 3675, 3969, 4275, 4389, 4455, 4655, 4725, 4851, 5225, 5643, 5775, 5985, 6237, 6615, 7315, 7425, 7695, 8085, 8379, 9405, 9975, 10241, 10395, 10773, 11025, 12825, 13167, 13475, 13965, 14175, 14553, 15675, 16929, 17325, 17955, 19845, 21945, 22275, 23275, 24255, 25137, 28215, 29925, 30723, 31185, 33075, 36575, 38475, 39501, 40425, 41895, 43659, 47025, 51205, 51975, 53865, 65835, 69825, 72765, 75411, 84645, 89775, 92169, 99225, 109725, 118503, 121275, 125685, 141075, 153615, 155925, 197505, 209475, 218295, 256025, 269325, 276507, 329175, 363825, 377055, 423225, 460845, 592515, 628425, 768075, 829521, 987525, 1091475, 1382535, 1885275, 2304225, 2962575, 4147605, 6912675, 20738025]

約数ペア:

[(1, 20738025), (3, 6912675), (5, 4147605), (7, 2962575), (9, 2304225), (11, 1885275), (15, 1382535), (19, 1091475), (21, 987525), (25, 829521), (27, 768075), (33, 628425), (35, 592515), (45, 460845), (49, 423225), (55, 377055), (57, 363825), (63, 329175), (75, 276507), (77, 269325), (81, 256025), (95, 218295), (99, 209475), (105, 197505), (133, 155925), (135, 153615), (147, 141075), (165, 125685), (171, 121275), (175, 118503), (189, 109725), (209, 99225), (225, 92169), (231, 89775), (245, 84645), (275, 75411), (285, 72765), (297, 69825), (315, 65835), (385, 53865), (399, 51975), (405, 51205), (441, 47025), (475, 43659), (495, 41895), (513, 40425), (525, 39501), (539, 38475), (567, 36575), (627, 33075), (665, 31185), (675, 30723), (693, 29925), (735, 28215), (825, 25137), (855, 24255), (891, 23275), (931, 22275), (945, 21945), (1045, 19845), (1155, 17955), (1197, 17325), (1225, 16929), (1323, 15675), (1425, 14553), (1463, 14175), (1485, 13965), (1539, 13475), (1575, 13167), (1617, 12825), (1881, 11025), (1925, 10773), (1995, 10395), (2025, 10241), (2079, 9975), (2205, 9405), (2475, 8379), (2565, 8085), (2695, 7695), (2793, 7425), (2835, 7315), (3135, 6615), (3325, 6237), (3465, 5985), (3591, 5775), (3675, 5643), (3969, 5225), (4275, 4851), (4389, 4725), (4455, 4655)]