81660176

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20663}}^1$

素因数の和:20703

約数の個数: 40

約数和(自身を含む): 179363520

約数和(自身を除く): 97703344

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 20663, 41326, 82652, 165304, 268619, 330608, 392597, 537238, 785194, 1074476, 1570388, 2148952, 3140776, 4297904, 5103761, 6281552, 10207522, 20415044, 40830088, 81660176]

約数ペア:

[(1, 81660176), (2, 40830088), (4, 20415044), (8, 10207522), (13, 6281552), (16, 5103761), (19, 4297904), (26, 3140776), (38, 2148952), (52, 1570388), (76, 1074476), (104, 785194), (152, 537238), (208, 392597), (247, 330608), (304, 268619), (494, 165304), (988, 82652), (1976, 41326), (3952, 20663)]