21129888

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{16931}}^1$

素因数の和:16957

約数の個数: 48

約数和(自身を含む): 59736096

約数和(自身を除く): 38606208

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248, 16931, 33862, 50793, 67724, 101586, 135448, 203172, 220103, 270896, 406344, 440206, 541792, 660309, 812688, 880412, 1320618, 1625376, 1760824, 2641236, 3521648, 5282472, 7043296, 10564944, 21129888]

約数ペア:

[(1, 21129888), (2, 10564944), (3, 7043296), (4, 5282472), (6, 3521648), (8, 2641236), (12, 1760824), (13, 1625376), (16, 1320618), (24, 880412), (26, 812688), (32, 660309), (39, 541792), (48, 440206), (52, 406344), (78, 270896), (96, 220103), (104, 203172), (156, 135448), (208, 101586), (312, 67724), (416, 50793), (624, 33862), (1248, 16931)]