18929168

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{877}}^1$

素因数の和:975

約数の個数: 40

約数和(自身を含む): 39193920

約数和(自身を除く): 20264752

約数列:

[1, 2, 4, 8, 16, 19, 38, 71, 76, 142, 152, 284, 304, 568, 877, 1136, 1349, 1754, 2698, 3508, 5396, 7016, 10792, 14032, 16663, 21584, 33326, 62267, 66652, 124534, 133304, 249068, 266608, 498136, 996272, 1183073, 2366146, 4732292, 9464584, 18929168]

約数ペア:

[(1, 18929168), (2, 9464584), (4, 4732292), (8, 2366146), (16, 1183073), (19, 996272), (38, 498136), (71, 266608), (76, 249068), (142, 133304), (152, 124534), (284, 66652), (304, 62267), (568, 33326), (877, 21584), (1136, 16663), (1349, 14032), (1754, 10792), (2698, 7016), (3508, 5396)]