20652975

素因数分解:

$3^4\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:107

約数の個数: 120

約数和(自身を含む): 46092288

約数和(自身を除く): 25439313

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 31, 35, 45, 47, 63, 75, 81, 93, 105, 135, 141, 155, 175, 189, 217, 225, 235, 279, 315, 329, 405, 423, 465, 525, 567, 651, 675, 705, 775, 837, 945, 987, 1085, 1175, 1269, 1395, 1457, 1575, 1645, 1953, 2025, 2115, 2325, 2511, 2835, 2961, 3255, 3525, 3807, 4185, 4371, 4725, 4935, 5425, 5859, 6345, 6975, 7285, 8225, 8883, 9765, 10199, 10575, 12555, 13113, 14175, 14805, 16275, 17577, 19035, 20925, 21855, 24675, 26649, 29295, 30597, 31725, 36425, 39339, 44415, 48825, 50995, 62775, 65565, 74025, 87885, 91791, 95175, 109275, 118017, 133245, 146475, 152985, 196695, 222075, 254975, 275373, 327825, 439425, 458955, 590085, 666225, 764925, 826119, 983475, 1376865, 2294775, 2950425, 4130595, 6884325, 20652975]

約数ペア:

[(1, 20652975), (3, 6884325), (5, 4130595), (7, 2950425), (9, 2294775), (15, 1376865), (21, 983475), (25, 826119), (27, 764925), (31, 666225), (35, 590085), (45, 458955), (47, 439425), (63, 327825), (75, 275373), (81, 254975), (93, 222075), (105, 196695), (135, 152985), (141, 146475), (155, 133245), (175, 118017), (189, 109275), (217, 95175), (225, 91791), (235, 87885), (279, 74025), (315, 65565), (329, 62775), (405, 50995), (423, 48825), (465, 44415), (525, 39339), (567, 36425), (651, 31725), (675, 30597), (705, 29295), (775, 26649), (837, 24675), (945, 21855), (987, 20925), (1085, 19035), (1175, 17577), (1269, 16275), (1395, 14805), (1457, 14175), (1575, 13113), (1645, 12555), (1953, 10575), (2025, 10199), (2115, 9765), (2325, 8883), (2511, 8225), (2835, 7285), (2961, 6975), (3255, 6345), (3525, 5859), (3807, 5425), (4185, 4935), (4371, 4725)]