28421120

素因数分解:

$2^{10}\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:106

約数の個数: 176

約数和(自身を含む): 85286208

約数和(自身を除く): 56865088

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 61, 64, 65, 70, 80, 91, 104, 112, 122, 128, 130, 140, 160, 182, 208, 224, 244, 256, 260, 280, 305, 320, 364, 416, 427, 448, 455, 488, 512, 520, 560, 610, 640, 728, 793, 832, 854, 896, 910, 976, 1024, 1040, 1120, 1220, 1280, 1456, 1586, 1664, 1708, 1792, 1820, 1952, 2080, 2135, 2240, 2440, 2560, 2912, 3172, 3328, 3416, 3584, 3640, 3904, 3965, 4160, 4270, 4480, 4880, 5120, 5551, 5824, 6344, 6656, 6832, 7168, 7280, 7808, 7930, 8320, 8540, 8960, 9760, 11102, 11648, 12688, 13312, 13664, 14560, 15616, 15860, 16640, 17080, 17920, 19520, 22204, 23296, 25376, 27328, 27755, 29120, 31232, 31720, 33280, 34160, 35840, 39040, 44408, 46592, 50752, 54656, 55510, 58240, 62464, 63440, 66560, 68320, 78080, 88816, 93184, 101504, 109312, 111020, 116480, 126880, 136640, 156160, 177632, 203008, 218624, 222040, 232960, 253760, 273280, 312320, 355264, 406016, 437248, 444080, 465920, 507520, 546560, 710528, 812032, 888160, 1015040, 1093120, 1421056, 1776320, 2030080, 2186240, 2842112, 3552640, 4060160, 5684224, 7105280, 14210560, 28421120]

約数ペア:

[(1, 28421120), (2, 14210560), (4, 7105280), (5, 5684224), (7, 4060160), (8, 3552640), (10, 2842112), (13, 2186240), (14, 2030080), (16, 1776320), (20, 1421056), (26, 1093120), (28, 1015040), (32, 888160), (35, 812032), (40, 710528), (52, 546560), (56, 507520), (61, 465920), (64, 444080), (65, 437248), (70, 406016), (80, 355264), (91, 312320), (104, 273280), (112, 253760), (122, 232960), (128, 222040), (130, 218624), (140, 203008), (160, 177632), (182, 156160), (208, 136640), (224, 126880), (244, 116480), (256, 111020), (260, 109312), (280, 101504), (305, 93184), (320, 88816), (364, 78080), (416, 68320), (427, 66560), (448, 63440), (455, 62464), (488, 58240), (512, 55510), (520, 54656), (560, 50752), (610, 46592), (640, 44408), (728, 39040), (793, 35840), (832, 34160), (854, 33280), (896, 31720), (910, 31232), (976, 29120), (1024, 27755), (1040, 27328), (1120, 25376), (1220, 23296), (1280, 22204), (1456, 19520), (1586, 17920), (1664, 17080), (1708, 16640), (1792, 15860), (1820, 15616), (1952, 14560), (2080, 13664), (2135, 13312), (2240, 12688), (2440, 11648), (2560, 11102), (2912, 9760), (3172, 8960), (3328, 8540), (3416, 8320), (3584, 7930), (3640, 7808), (3904, 7280), (3965, 7168), (4160, 6832), (4270, 6656), (4480, 6344), (4880, 5824), (5120, 5551)]