81756642

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:399

約数の個数: 64

約数和(自身を含む): 184135680

約数和(自身を除く): 102379038

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 71, 73, 142, 146, 213, 219, 239, 426, 438, 478, 717, 781, 803, 1434, 1562, 1606, 2343, 2409, 2629, 4686, 4818, 5183, 5258, 7887, 10366, 15549, 15774, 16969, 17447, 31098, 33938, 34894, 50907, 52341, 57013, 101814, 104682, 114026, 171039, 186659, 191917, 342078, 373318, 383834, 559977, 575751, 1119954, 1151502, 1238737, 2477474, 3716211, 7432422, 13626107, 27252214, 40878321, 81756642]

約数ペア:

[(1, 81756642), (2, 40878321), (3, 27252214), (6, 13626107), (11, 7432422), (22, 3716211), (33, 2477474), (66, 1238737), (71, 1151502), (73, 1119954), (142, 575751), (146, 559977), (213, 383834), (219, 373318), (239, 342078), (426, 191917), (438, 186659), (478, 171039), (717, 114026), (781, 104682), (803, 101814), (1434, 57013), (1562, 52341), (1606, 50907), (2343, 34894), (2409, 33938), (2629, 31098), (4686, 17447), (4818, 16969), (5183, 15774), (5258, 15549), (7887, 10366)]