21188648

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10723}}^1$

素因数の和:10761

約数の個数: 32

約数和(自身を含む): 45040800

約数和(自身を除く): 23852152

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 10723, 21446, 42892, 85784, 139399, 203737, 278798, 407474, 557596, 814948, 1115192, 1629896, 2648581, 5297162, 10594324, 21188648]

約数ペア:

[(1, 21188648), (2, 10594324), (4, 5297162), (8, 2648581), (13, 1629896), (19, 1115192), (26, 814948), (38, 557596), (52, 407474), (76, 278798), (104, 203737), (152, 139399), (247, 85784), (494, 42892), (988, 21446), (1976, 10723)]