21640554

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1063}}^1$

素因数の和:1116

約数の個数: 64

約数和(自身を含む): 53625600

約数和(自身を除く): 31985046

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 29, 39, 54, 58, 78, 87, 117, 174, 234, 261, 351, 377, 522, 702, 754, 783, 1063, 1131, 1566, 2126, 2262, 3189, 3393, 6378, 6786, 9567, 10179, 13819, 19134, 20358, 27638, 28701, 30827, 41457, 57402, 61654, 82914, 92481, 124371, 184962, 248742, 277443, 373113, 400751, 554886, 746226, 801502, 832329, 1202253, 1664658, 2404506, 3606759, 7213518, 10820277, 21640554]

約数ペア:

[(1, 21640554), (2, 10820277), (3, 7213518), (6, 3606759), (9, 2404506), (13, 1664658), (18, 1202253), (26, 832329), (27, 801502), (29, 746226), (39, 554886), (54, 400751), (58, 373113), (78, 277443), (87, 248742), (117, 184962), (174, 124371), (234, 92481), (261, 82914), (351, 61654), (377, 57402), (522, 41457), (702, 30827), (754, 28701), (783, 27638), (1063, 20358), (1131, 19134), (1566, 13819), (2126, 10179), (2262, 9567), (3189, 6786), (3393, 6378)]