21470218

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:235

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22075382

約数列:

[1, 2, 7, 11, 14, 17, 22, 34, 59, 77, 118, 119, 139, 154, 187, 238, 278, 374, 413, 649, 826, 973, 1003, 1298, 1309, 1529, 1946, 2006, 2363, 2618, 3058, 4543, 4726, 7021, 8201, 9086, 10703, 11033, 14042, 16402, 16541, 21406, 22066, 25993, 33082, 51986, 57407, 77231, 90211, 114814, 139417, 154462, 180422, 181951, 278834, 363902, 631477, 975919, 1262954, 1533587, 1951838, 3067174, 10735109, 21470218]

約数ペア:

[(1, 21470218), (2, 10735109), (7, 3067174), (11, 1951838), (14, 1533587), (17, 1262954), (22, 975919), (34, 631477), (59, 363902), (77, 278834), (118, 181951), (119, 180422), (139, 154462), (154, 139417), (187, 114814), (238, 90211), (278, 77231), (374, 57407), (413, 51986), (649, 33082), (826, 25993), (973, 22066), (1003, 21406), (1298, 16541), (1309, 16402), (1529, 14042), (1946, 11033), (2006, 10703), (2363, 9086), (2618, 8201), (3058, 7021), (4543, 4726)]