20290725

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{991}}^1$

素因数の和:1027

約数の個数: 72

約数和(自身を含む): 44774912

約数和(自身を除く): 24484187

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 25, 35, 39, 45, 63, 65, 75, 91, 105, 117, 175, 195, 225, 273, 315, 325, 455, 525, 585, 819, 975, 991, 1365, 1575, 2275, 2925, 2973, 4095, 4955, 6825, 6937, 8919, 12883, 14865, 20475, 20811, 24775, 34685, 38649, 44595, 62433, 64415, 74325, 90181, 104055, 115947, 173425, 193245, 222975, 270543, 312165, 322075, 450905, 520275, 579735, 811629, 966225, 1352715, 1560825, 2254525, 2898675, 4058145, 6763575, 20290725]

約数ペア:

[(1, 20290725), (3, 6763575), (5, 4058145), (7, 2898675), (9, 2254525), (13, 1560825), (15, 1352715), (21, 966225), (25, 811629), (35, 579735), (39, 520275), (45, 450905), (63, 322075), (65, 312165), (75, 270543), (91, 222975), (105, 193245), (117, 173425), (175, 115947), (195, 104055), (225, 90181), (273, 74325), (315, 64415), (325, 62433), (455, 44595), (525, 38649), (585, 34685), (819, 24775), (975, 20811), (991, 20475), (1365, 14865), (1575, 12883), (2275, 8919), (2925, 6937), (2973, 6825), (4095, 4955)]