20678612

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 40212480

約数和(自身を除く): 19533868

約数列:

[1, 2, 4, 19, 31, 38, 62, 67, 76, 124, 131, 134, 262, 268, 524, 589, 1178, 1273, 2077, 2356, 2489, 2546, 4061, 4154, 4978, 5092, 8122, 8308, 8777, 9956, 16244, 17554, 35108, 39463, 77159, 78926, 154318, 157852, 166763, 272087, 308636, 333526, 544174, 667052, 1088348, 5169653, 10339306, 20678612]

約数ペア:

[(1, 20678612), (2, 10339306), (4, 5169653), (19, 1088348), (31, 667052), (38, 544174), (62, 333526), (67, 308636), (76, 272087), (124, 166763), (131, 157852), (134, 154318), (262, 78926), (268, 77159), (524, 39463), (589, 35108), (1178, 17554), (1273, 16244), (2077, 9956), (2356, 8777), (2489, 8308), (2546, 8122), (4061, 5092), (4154, 4978)]