21874788

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1087}}^1$

素因数の和:1153

約数の個数: 72

約数和(自身を含む): 60988928

約数和(自身を除く): 39114140

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 43, 52, 78, 86, 117, 129, 156, 172, 234, 258, 387, 468, 516, 559, 774, 1087, 1118, 1548, 1677, 2174, 2236, 3261, 3354, 4348, 5031, 6522, 6708, 9783, 10062, 13044, 14131, 19566, 20124, 28262, 39132, 42393, 46741, 56524, 84786, 93482, 127179, 140223, 169572, 186964, 254358, 280446, 420669, 508716, 560892, 607633, 841338, 1215266, 1682676, 1822899, 2430532, 3645798, 5468697, 7291596, 10937394, 21874788]

約数ペア:

[(1, 21874788), (2, 10937394), (3, 7291596), (4, 5468697), (6, 3645798), (9, 2430532), (12, 1822899), (13, 1682676), (18, 1215266), (26, 841338), (36, 607633), (39, 560892), (43, 508716), (52, 420669), (78, 280446), (86, 254358), (117, 186964), (129, 169572), (156, 140223), (172, 127179), (234, 93482), (258, 84786), (387, 56524), (468, 46741), (516, 42393), (559, 39132), (774, 28262), (1087, 20124), (1118, 19566), (1548, 14131), (1677, 13044), (2174, 10062), (2236, 9783), (3261, 6708), (3354, 6522), (4348, 5031)]