20300800

素因数分解:

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

素因数の和:104

約数の個数: 132

約数和(自身を含む): 55080676

約数和(自身を除く): 34779876

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 61, 64, 65, 80, 100, 104, 122, 128, 130, 160, 200, 208, 244, 256, 260, 305, 320, 325, 400, 416, 488, 512, 520, 610, 640, 650, 793, 800, 832, 976, 1024, 1040, 1220, 1280, 1300, 1525, 1586, 1600, 1664, 1952, 2080, 2440, 2560, 2600, 3050, 3172, 3200, 3328, 3904, 3965, 4160, 4880, 5120, 5200, 6100, 6344, 6400, 6656, 7808, 7930, 8320, 9760, 10400, 12200, 12688, 12800, 13312, 15616, 15860, 16640, 19520, 19825, 20800, 24400, 25376, 25600, 31232, 31720, 33280, 39040, 39650, 41600, 48800, 50752, 62464, 63440, 66560, 78080, 79300, 83200, 97600, 101504, 126880, 156160, 158600, 166400, 195200, 203008, 253760, 312320, 317200, 332800, 390400, 406016, 507520, 634400, 780800, 812032, 1015040, 1268800, 1561600, 2030080, 2537600, 4060160, 5075200, 10150400, 20300800]

約数ペア:

[(1, 20300800), (2, 10150400), (4, 5075200), (5, 4060160), (8, 2537600), (10, 2030080), (13, 1561600), (16, 1268800), (20, 1015040), (25, 812032), (26, 780800), (32, 634400), (40, 507520), (50, 406016), (52, 390400), (61, 332800), (64, 317200), (65, 312320), (80, 253760), (100, 203008), (104, 195200), (122, 166400), (128, 158600), (130, 156160), (160, 126880), (200, 101504), (208, 97600), (244, 83200), (256, 79300), (260, 78080), (305, 66560), (320, 63440), (325, 62464), (400, 50752), (416, 48800), (488, 41600), (512, 39650), (520, 39040), (610, 33280), (640, 31720), (650, 31232), (793, 25600), (800, 25376), (832, 24400), (976, 20800), (1024, 19825), (1040, 19520), (1220, 16640), (1280, 15860), (1300, 15616), (1525, 13312), (1586, 12800), (1600, 12688), (1664, 12200), (1952, 10400), (2080, 9760), (2440, 8320), (2560, 7930), (2600, 7808), (3050, 6656), (3172, 6400), (3200, 6344), (3328, 6100), (3904, 5200), (3965, 5120), (4160, 4880)]