20131891456

素因数分解:

$2^8\times {\mathrm{157}}^1\times {\mathrm{257}}^1\times {\mathrm{1949}}^1$

素因数の和:2379

約数の個数: 72

約数和(自身を含む): 40619287800

約数和(自身を除く): 20487396344

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 157, 256, 257, 314, 514, 628, 1028, 1256, 1949, 2056, 2512, 3898, 4112, 5024, 7796, 8224, 10048, 15592, 16448, 20096, 31184, 32896, 40192, 40349, 62368, 65792, 80698, 124736, 161396, 249472, 305993, 322792, 498944, 500893, 611986, 645584, 1001786, 1223972, 1291168, 2003572, 2447944, 2582336, 4007144, 4895888, 5164672, 8014288, 9791776, 10329344, 16028576, 19583552, 32057152, 39167104, 64114304, 78334208, 78640201, 128228608, 157280402, 314560804, 629121608, 1258243216, 2516486432, 5032972864, 10065945728, 20131891456]

約数ペア:

[(1, 20131891456), (2, 10065945728), (4, 5032972864), (8, 2516486432), (16, 1258243216), (32, 629121608), (64, 314560804), (128, 157280402), (157, 128228608), (256, 78640201), (257, 78334208), (314, 64114304), (514, 39167104), (628, 32057152), (1028, 19583552), (1256, 16028576), (1949, 10329344), (2056, 9791776), (2512, 8014288), (3898, 5164672), (4112, 4895888), (5024, 4007144), (7796, 2582336), (8224, 2447944), (10048, 2003572), (15592, 1291168), (16448, 1223972), (20096, 1001786), (31184, 645584), (32896, 611986), (40192, 500893), (40349, 498944), (62368, 322792), (65792, 305993), (80698, 249472), (124736, 161396)]