21976353

素因数分解:

$3^4\times 7^4\times {\mathrm{113}}^1$

素因数の和:153

約数の個数: 50

約数和(自身を含む): 38636994

約数和(自身を除く): 16660641

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 113, 147, 189, 339, 343, 441, 567, 791, 1017, 1029, 1323, 2373, 2401, 3051, 3087, 3969, 5537, 7119, 7203, 9153, 9261, 16611, 21357, 21609, 27783, 38759, 49833, 64071, 64827, 116277, 149499, 194481, 271313, 348831, 448497, 813939, 1046493, 2441817, 3139479, 7325451, 21976353]

約数ペア:

[(1, 21976353), (3, 7325451), (7, 3139479), (9, 2441817), (21, 1046493), (27, 813939), (49, 448497), (63, 348831), (81, 271313), (113, 194481), (147, 149499), (189, 116277), (339, 64827), (343, 64071), (441, 49833), (567, 38759), (791, 27783), (1017, 21609), (1029, 21357), (1323, 16611), (2373, 9261), (2401, 9153), (3051, 7203), (3087, 7119), (3969, 5537)]