21479562

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{307}}^1$

素因数の和:364

約数の個数: 72

約数和(自身を含む): 52756704

約数和(自身を除く): 31277142

約数列:

[1, 2, 3, 6, 9, 13, 18, 23, 26, 39, 46, 69, 78, 117, 138, 169, 207, 234, 299, 307, 338, 414, 507, 598, 614, 897, 921, 1014, 1521, 1794, 1842, 2691, 2763, 3042, 3887, 3991, 5382, 5526, 7061, 7774, 7982, 11661, 11973, 14122, 21183, 23322, 23946, 34983, 35919, 42366, 51883, 63549, 69966, 71838, 91793, 103766, 127098, 155649, 183586, 275379, 311298, 466947, 550758, 826137, 933894, 1193309, 1652274, 2386618, 3579927, 7159854, 10739781, 21479562]

約数ペア:

[(1, 21479562), (2, 10739781), (3, 7159854), (6, 3579927), (9, 2386618), (13, 1652274), (18, 1193309), (23, 933894), (26, 826137), (39, 550758), (46, 466947), (69, 311298), (78, 275379), (117, 183586), (138, 155649), (169, 127098), (207, 103766), (234, 91793), (299, 71838), (307, 69966), (338, 63549), (414, 51883), (507, 42366), (598, 35919), (614, 34983), (897, 23946), (921, 23322), (1014, 21183), (1521, 14122), (1794, 11973), (1842, 11661), (2691, 7982), (2763, 7774), (3042, 7061), (3887, 5526), (3991, 5382)]