18877792

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{509}}^1$

素因数の和:599

約数の個数: 48

約数和(自身を含む): 39841200

約数和(自身を除く): 20963408

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 61, 76, 122, 152, 244, 304, 488, 509, 608, 976, 1018, 1159, 1952, 2036, 2318, 4072, 4636, 8144, 9272, 9671, 16288, 18544, 19342, 31049, 37088, 38684, 62098, 77368, 124196, 154736, 248392, 309472, 496784, 589931, 993568, 1179862, 2359724, 4719448, 9438896, 18877792]

約数ペア:

[(1, 18877792), (2, 9438896), (4, 4719448), (8, 2359724), (16, 1179862), (19, 993568), (32, 589931), (38, 496784), (61, 309472), (76, 248392), (122, 154736), (152, 124196), (244, 77368), (304, 62098), (488, 38684), (509, 37088), (608, 31049), (976, 19342), (1018, 18544), (1159, 16288), (1952, 9671), (2036, 9272), (2318, 8144), (4072, 4636)]