20814976

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1787}}^1$

素因数の和:1821

約数の個数: 64

約数和(自身を含む): 51065280

約数和(自身を除く): 30250304

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 182, 208, 224, 364, 416, 448, 728, 832, 896, 1456, 1664, 1787, 2912, 3574, 5824, 7148, 11648, 12509, 14296, 23231, 25018, 28592, 46462, 50036, 57184, 92924, 100072, 114368, 162617, 185848, 200144, 228736, 325234, 371696, 400288, 650468, 743392, 800576, 1300936, 1486784, 1601152, 2601872, 2973568, 5203744, 10407488, 20814976]

約数ペア:

[(1, 20814976), (2, 10407488), (4, 5203744), (7, 2973568), (8, 2601872), (13, 1601152), (14, 1486784), (16, 1300936), (26, 800576), (28, 743392), (32, 650468), (52, 400288), (56, 371696), (64, 325234), (91, 228736), (104, 200144), (112, 185848), (128, 162617), (182, 114368), (208, 100072), (224, 92924), (364, 57184), (416, 50036), (448, 46462), (728, 28592), (832, 25018), (896, 23231), (1456, 14296), (1664, 12509), (1787, 11648), (2912, 7148), (3574, 5824)]