19615778

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:291

約数の個数: 48

約数和(自身を含む): 37490040

約数和(自身を除く): 17874262

約数列:

[1, 2, 7, 13, 14, 26, 49, 89, 91, 98, 173, 178, 182, 346, 623, 637, 1157, 1211, 1246, 1274, 2249, 2314, 2422, 4361, 4498, 8099, 8477, 8722, 15397, 15743, 16198, 16954, 30794, 31486, 56693, 107779, 110201, 113386, 200161, 215558, 220402, 400322, 754453, 1401127, 1508906, 2802254, 9807889, 19615778]

約数ペア:

[(1, 19615778), (2, 9807889), (7, 2802254), (13, 1508906), (14, 1401127), (26, 754453), (49, 400322), (89, 220402), (91, 215558), (98, 200161), (173, 113386), (178, 110201), (182, 107779), (346, 56693), (623, 31486), (637, 30794), (1157, 16954), (1211, 16198), (1246, 15743), (1274, 15397), (2249, 8722), (2314, 8477), (2422, 8099), (4361, 4498)]