81648016

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{419}}^1\times {\mathrm{641}}^1$

素因数の和:1087

約数の個数: 40

約数和(自身を含む): 167176800

約数和(自身を除く): 85528784

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 419, 641, 838, 1282, 1676, 2564, 3352, 5128, 6704, 7961, 10256, 12179, 15922, 24358, 31844, 48716, 63688, 97432, 127376, 194864, 268579, 537158, 1074316, 2148632, 4297264, 5103001, 10206002, 20412004, 40824008, 81648016]

約数ペア:

[(1, 81648016), (2, 40824008), (4, 20412004), (8, 10206002), (16, 5103001), (19, 4297264), (38, 2148632), (76, 1074316), (152, 537158), (304, 268579), (419, 194864), (641, 127376), (838, 97432), (1282, 63688), (1676, 48716), (2564, 31844), (3352, 24358), (5128, 15922), (6704, 12179), (7961, 10256)]