20321886

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 45948672

約数和(自身を除く): 25626786

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 73, 78, 83, 86, 129, 146, 166, 219, 249, 258, 438, 498, 559, 949, 1079, 1118, 1677, 1898, 2158, 2847, 3139, 3237, 3354, 3569, 5694, 6059, 6278, 6474, 7138, 9417, 10707, 12118, 18177, 18834, 21414, 36354, 40807, 46397, 78767, 81614, 92794, 122421, 139191, 157534, 236301, 244842, 260537, 278382, 472602, 521074, 781611, 1563222, 3386981, 6773962, 10160943, 20321886]

約数ペア:

[(1, 20321886), (2, 10160943), (3, 6773962), (6, 3386981), (13, 1563222), (26, 781611), (39, 521074), (43, 472602), (73, 278382), (78, 260537), (83, 244842), (86, 236301), (129, 157534), (146, 139191), (166, 122421), (219, 92794), (249, 81614), (258, 78767), (438, 46397), (498, 40807), (559, 36354), (949, 21414), (1079, 18834), (1118, 18177), (1677, 12118), (1898, 10707), (2158, 9417), (2847, 7138), (3139, 6474), (3237, 6278), (3354, 6059), (3569, 5694)]