21155170

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 43130880

約数和(自身を除く): 21975710

約数列:

[1, 2, 5, 10, 19, 23, 38, 46, 47, 94, 95, 103, 115, 190, 206, 230, 235, 437, 470, 515, 874, 893, 1030, 1081, 1786, 1957, 2162, 2185, 2369, 3914, 4370, 4465, 4738, 4841, 5405, 8930, 9682, 9785, 10810, 11845, 19570, 20539, 23690, 24205, 41078, 45011, 48410, 90022, 91979, 102695, 111343, 183958, 205390, 222686, 225055, 450110, 459895, 556715, 919790, 1113430, 2115517, 4231034, 10577585, 21155170]

約数ペア:

[(1, 21155170), (2, 10577585), (5, 4231034), (10, 2115517), (19, 1113430), (23, 919790), (38, 556715), (46, 459895), (47, 450110), (94, 225055), (95, 222686), (103, 205390), (115, 183958), (190, 111343), (206, 102695), (230, 91979), (235, 90022), (437, 48410), (470, 45011), (515, 41078), (874, 24205), (893, 23690), (1030, 20539), (1081, 19570), (1786, 11845), (1957, 10810), (2162, 9785), (2185, 9682), (2369, 8930), (3914, 5405), (4370, 4841), (4465, 4738)]