20834775

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1$

素因数の和:465

約数の個数: 72

約数和(自身を含む): 42653520

約数和(自身を除く): 21818745

約数列:

[1, 3, 5, 9, 13, 15, 17, 25, 39, 45, 51, 65, 75, 85, 117, 153, 195, 221, 225, 255, 325, 419, 425, 585, 663, 765, 975, 1105, 1257, 1275, 1989, 2095, 2925, 3315, 3771, 3825, 5447, 5525, 6285, 7123, 9945, 10475, 16341, 16575, 18855, 21369, 27235, 31425, 35615, 49023, 49725, 64107, 81705, 92599, 94275, 106845, 136175, 178075, 245115, 277797, 320535, 408525, 462995, 534225, 833391, 1225575, 1388985, 1602675, 2314975, 4166955, 6944925, 20834775]

約数ペア:

[(1, 20834775), (3, 6944925), (5, 4166955), (9, 2314975), (13, 1602675), (15, 1388985), (17, 1225575), (25, 833391), (39, 534225), (45, 462995), (51, 408525), (65, 320535), (75, 277797), (85, 245115), (117, 178075), (153, 136175), (195, 106845), (221, 94275), (225, 92599), (255, 81705), (325, 64107), (419, 49725), (425, 49023), (585, 35615), (663, 31425), (765, 27235), (975, 21369), (1105, 18855), (1257, 16575), (1275, 16341), (1989, 10475), (2095, 9945), (2925, 7123), (3315, 6285), (3771, 5525), (3825, 5447)]