20815696412

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{140453}}^1$

素因数の和:140610

約数の個数: 48

約数和(自身を含む): 42787906560

約数和(自身を除く): 21972210148

約数列:

[1, 2, 4, 7, 14, 28, 67, 79, 134, 158, 268, 316, 469, 553, 938, 1106, 1876, 2212, 5293, 10586, 21172, 37051, 74102, 140453, 148204, 280906, 561812, 983171, 1966342, 3932684, 9410351, 11095787, 18820702, 22191574, 37641404, 44383148, 65872457, 77670509, 131744914, 155341018, 263489828, 310682036, 743417729, 1486835458, 2973670916, 5203924103, 10407848206, 20815696412]

約数ペア:

[(1, 20815696412), (2, 10407848206), (4, 5203924103), (7, 2973670916), (14, 1486835458), (28, 743417729), (67, 310682036), (79, 263489828), (134, 155341018), (158, 131744914), (268, 77670509), (316, 65872457), (469, 44383148), (553, 37641404), (938, 22191574), (1106, 18820702), (1876, 11095787), (2212, 9410351), (5293, 3932684), (10586, 1966342), (21172, 983171), (37051, 561812), (74102, 280906), (140453, 148204)]