20330128

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{13963}}^1$

素因数の和:13991

約数の個数: 40

約数和(自身を含む): 48483008

約数和(自身を除く): 28152880

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 13963, 27926, 55852, 97741, 111704, 181519, 195482, 223408, 363038, 390964, 726076, 781928, 1270633, 1452152, 1563856, 2541266, 2904304, 5082532, 10165064, 20330128]

約数ペア:

[(1, 20330128), (2, 10165064), (4, 5082532), (7, 2904304), (8, 2541266), (13, 1563856), (14, 1452152), (16, 1270633), (26, 781928), (28, 726076), (52, 390964), (56, 363038), (91, 223408), (104, 195482), (112, 181519), (182, 111704), (208, 97741), (364, 55852), (728, 27926), (1456, 13963)]