20789964

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1433}}^1$

素因数の和:1487

約数の個数: 72

約数和(自身を含む): 58461312

約数和(自身を除く): 37671348

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 31, 36, 39, 52, 62, 78, 93, 117, 124, 156, 186, 234, 279, 372, 403, 468, 558, 806, 1116, 1209, 1433, 1612, 2418, 2866, 3627, 4299, 4836, 5732, 7254, 8598, 12897, 14508, 17196, 18629, 25794, 37258, 44423, 51588, 55887, 74516, 88846, 111774, 133269, 167661, 177692, 223548, 266538, 335322, 399807, 533076, 577499, 670644, 799614, 1154998, 1599228, 1732497, 2309996, 3464994, 5197491, 6929988, 10394982, 20789964]

約数ペア:

[(1, 20789964), (2, 10394982), (3, 6929988), (4, 5197491), (6, 3464994), (9, 2309996), (12, 1732497), (13, 1599228), (18, 1154998), (26, 799614), (31, 670644), (36, 577499), (39, 533076), (52, 399807), (62, 335322), (78, 266538), (93, 223548), (117, 177692), (124, 167661), (156, 133269), (186, 111774), (234, 88846), (279, 74516), (372, 55887), (403, 51588), (468, 44423), (558, 37258), (806, 25794), (1116, 18629), (1209, 17196), (1433, 14508), (1612, 12897), (2418, 8598), (2866, 7254), (3627, 5732), (4299, 4836)]