20101120

素因数分解:

$2^{11}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1$

素因数の和:191

約数の個数: 96

約数和(自身を含む): 52284960

約数和(自身を除く): 32183840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 151, 160, 208, 256, 260, 302, 320, 416, 512, 520, 604, 640, 755, 832, 1024, 1040, 1208, 1280, 1510, 1664, 1963, 2048, 2080, 2416, 2560, 3020, 3328, 3926, 4160, 4832, 5120, 6040, 6656, 7852, 8320, 9664, 9815, 10240, 12080, 13312, 15704, 16640, 19328, 19630, 24160, 26624, 31408, 33280, 38656, 39260, 48320, 62816, 66560, 77312, 78520, 96640, 125632, 133120, 154624, 157040, 193280, 251264, 309248, 314080, 386560, 502528, 628160, 773120, 1005056, 1256320, 1546240, 2010112, 2512640, 4020224, 5025280, 10050560, 20101120]

約数ペア:

[(1, 20101120), (2, 10050560), (4, 5025280), (5, 4020224), (8, 2512640), (10, 2010112), (13, 1546240), (16, 1256320), (20, 1005056), (26, 773120), (32, 628160), (40, 502528), (52, 386560), (64, 314080), (65, 309248), (80, 251264), (104, 193280), (128, 157040), (130, 154624), (151, 133120), (160, 125632), (208, 96640), (256, 78520), (260, 77312), (302, 66560), (320, 62816), (416, 48320), (512, 39260), (520, 38656), (604, 33280), (640, 31408), (755, 26624), (832, 24160), (1024, 19630), (1040, 19328), (1208, 16640), (1280, 15704), (1510, 13312), (1664, 12080), (1963, 10240), (2048, 9815), (2080, 9664), (2416, 8320), (2560, 7852), (3020, 6656), (3328, 6040), (3926, 5120), (4160, 4832)]