21906225

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 43872192

約数和(自身を除く): 21965967

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 53, 55, 75, 99, 159, 165, 167, 225, 265, 275, 477, 495, 501, 583, 795, 825, 835, 1325, 1503, 1749, 1837, 2385, 2475, 2505, 2915, 3975, 4175, 5247, 5511, 7515, 8745, 8851, 9185, 11925, 12525, 14575, 16533, 26235, 26553, 27555, 37575, 43725, 44255, 45925, 79659, 82665, 97361, 131175, 132765, 137775, 221275, 292083, 398295, 413325, 486805, 663825, 876249, 1460415, 1991475, 2434025, 4381245, 7302075, 21906225]

約数ペア:

[(1, 21906225), (3, 7302075), (5, 4381245), (9, 2434025), (11, 1991475), (15, 1460415), (25, 876249), (33, 663825), (45, 486805), (53, 413325), (55, 398295), (75, 292083), (99, 221275), (159, 137775), (165, 132765), (167, 131175), (225, 97361), (265, 82665), (275, 79659), (477, 45925), (495, 44255), (501, 43725), (583, 37575), (795, 27555), (825, 26553), (835, 26235), (1325, 16533), (1503, 14575), (1749, 12525), (1837, 11925), (2385, 9185), (2475, 8851), (2505, 8745), (2915, 7515), (3975, 5511), (4175, 5247)]