21473790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55061}}^1$

素因数の和:55084

約数の個数: 32

約数和(自身を含む): 55502496

約数和(自身を除く): 34028706

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55061, 110122, 165183, 275305, 330366, 550610, 715793, 825915, 1431586, 1651830, 2147379, 3578965, 4294758, 7157930, 10736895, 21473790]

約数ペア:

[(1, 21473790), (2, 10736895), (3, 7157930), (5, 4294758), (6, 3578965), (10, 2147379), (13, 1651830), (15, 1431586), (26, 825915), (30, 715793), (39, 550610), (65, 330366), (78, 275305), (130, 165183), (195, 110122), (390, 55061)]