20139784

素因数分解:

$2^3\times 7^2\times {\mathrm{83}}^1\times {\mathrm{619}}^1$

素因数の和:722

約数の個数: 48

約数和(自身を含む): 44528400

約数和(自身を除く): 24388616

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 83, 98, 166, 196, 332, 392, 581, 619, 664, 1162, 1238, 2324, 2476, 4067, 4333, 4648, 4952, 8134, 8666, 16268, 17332, 30331, 32536, 34664, 51377, 60662, 102754, 121324, 205508, 242648, 359639, 411016, 719278, 1438556, 2517473, 2877112, 5034946, 10069892, 20139784]

約数ペア:

[(1, 20139784), (2, 10069892), (4, 5034946), (7, 2877112), (8, 2517473), (14, 1438556), (28, 719278), (49, 411016), (56, 359639), (83, 242648), (98, 205508), (166, 121324), (196, 102754), (332, 60662), (392, 51377), (581, 34664), (619, 32536), (664, 30331), (1162, 17332), (1238, 16268), (2324, 8666), (2476, 8134), (4067, 4952), (4333, 4648)]